Last time we spoke about the landing at Saidor and the drive against Sio. The Australians were still advancing across Shaggy Ridge when General MacArthur unleashed an amphibious assault against Saidor to cut off the Japanese escape and isolate Sio. Numerous features were seized up the large ridge and the Americans successfully amphibiously assaulted Saidor and seized their airfield. General Adachi placed the 51st and 20th divisions under the command of General Nakano, who was tasked with advancing to Gali to try and secure a new supply point. Meanwhile efforts were made to try and contain the new threat in Saidor while simultaneously holding back the Australians in the south. Over on new britain the airdrome was seized as Colonel Katayama launched a failed counter attack against the Marines. The Marines tossed back the attack and began their own advance further inland.

This episode is Ledo Road Offensive

Welcome to the Pacific War Podcast Week by Week, I am your dutiful host Craig Watson. But, before we start I want to also remind you this podcast is only made possible through the efforts of Kings and Generals over at Youtube. Perhaps you want to learn more about world war two? Kings and Generals have an assortment of episodes on world war two and much more  so go give them a look over on Youtube. So please subscribe to Kings and Generals over at Youtube and to continue helping us produce this content please check out www.patreon.com/kingsandgenerals. If you are still hungry for some more history related content, over on my channel, the Pacific War Channel you can find a few videos all the way from the Opium Wars of the 1800’s until the end of the Pacific War in 1945.

The Americans had landed at Cape Gloucester, Saidor and were carrying out massive attacks against Rabaul. As we had seen previously, on November 5th, aided by bad weather, a surprise air raid was made by the USS Saratoga and Princeton, led by Rear-Admiral Frederick Sherman that inflicted heavy damage to 4 cruisers within the harbor; Maya’s engine room was smashed by a bomb killing over 70 men; a 500 lb bomb hit Mogami; Takao took 2 500 lb bomb hits while 3 500 lb bombs narrowly missed Atago killing 23 seamen and caused severe damage to the ship’s plating. 2 other cruisers and 3 destroyers also suffered light damage. Captain George Chandler flying a P-38 fighter pilot described how “There were B-24 bombers up high and B-25 bombers attacking right down on the deck dropping ‘frag’ bombs on the airplanes along the runways … we did our best work at high altitude, but we also took part in combat a thousand feet off the ground.”

The devastation caused Admiral Miniechi Koga to withdraw his forces to Truk, thus ending the IJN threat to Bougainville. A Japanese naval officer would later admit that they had given up on Bougainville mainly because of “the serious damage received by several Second Fleet cruisers at Rabaul by carrier attack …” The successful  raid against Rabaul left Halsey ecstatic. “It is real music to me and opens the stops for a funeral dirge for Tojo’s Rabaul.” On November 8th, reinforcements led by Rear-admiral Alfred Montgomery task force 38, with the new fleet carriers USS Bunker Hill, Essex and Independence. With the added carrier strength on November 11th, a follow up air raid was made seeing the IJN cruiser Agano torpedoed and badly damaged, while 35 Japanese aircraft out of 120 launched in a counter attack against the carrier force were shot down. Montgomery would not lose a single ship. Admiral Koga’s decision to send carrier pilots to bolster Rabaul had quite literally blown up in his face. Koga’s air fleet had lost 43 of its 82 Zeros, 38 of its 34 Vals, 34 of its 40 Kates and 6 Judy spotter planes. Over 86 of his 192 experienced pilots and crew had perished, and he had only inflicted minimal damage to Nimitz fleet, it was a disaster. Yet the fantastical reports from Japanese pilots kept pouring in, claiming the air battles over Bougainville were infact won by the IJN air forces. Newspapers in Japan reported victories that added up to the destruction of 5 American battleships, 10 carriers, 19 cruisers and 7 destroyers. The reality was the destruction of 2 cruisers, the USS Birmingham and Denver.

By mid november Vice Admiral Kusaka was finding it difficult to sustain attacks against allied convoys feeding supplies to Empress Augusta Bay. On November 12th, Rabaul only had 113 Zero’s of which only 59 were operational. Crews were suffering from malaria and other diseases, no one was granted rest as they were limited in personnel and under constant attack. The quality of ground crews and pilots was deteriorating every week.

From November 12 through December 16, the daytime skies over the Gazelle Peninsula remained relatively quiet, as the US carrier forces had departed to support operations in the Central Pacific. AirSols received a new commander on the November 20th, Major General Ralph Mitchell who continued to support operations in Bougainville and General Kenney’s Fifth Air Force was supporting preparations for the landings in western New Britain. The lull gave Admiral Kusaka a brief opportunity to recuperate as replacements began to arrive from the Marshalls and Truk. The Imperial Japanese Navy would take six months to replenish its carrier pilots with less well-trained and inexperienced replacements. In the meantime the carrier fleet itself, Japan’s most expensive and precious strategic asset, was forced to remain idle in Truk as Nimitz began his island hop through the Central Pacific

Meanwhile the Torokina airfield had become crude but operational. The Seabees had created a single 4750 foot by 200 foot strip. It lacked taxiways, hardstands and buildings, but by December 10th it could launch aircraft. Soon the Seabees would carve 2 additional landing trips in the jungle 3 miles further inland. The first would be a mile long, the second 8000 feet or so for bombers. Unlike the Japanese airfields on the Gazelle Peninsula which would take more than a year to complete, both of these American airfields took a month. You often hear, especially from marine veterans of the pacific, praise for the Seabees, such a colossal advantage in logistics paved the way to victory.

A massive fighter sweep was launched on December 17 consisting of 32 Corsairs, 24 F6Fs, and 24 RNZAF Kittyhawks from airfields at New Georgia and Vella Lavella who rendezvoused at Torokina, topped off their fuel tanks, and hit  Rabaul. The strike was led by Major Greg “Pappy” Boyington, the commanding officer of Marine Fighter Squadron 214, better known by its nickname, the "Black Sheep Squadron". The three types of aircraft had different flying characteristics and different cruising speeds. The Kittyhawks, slowest of the bunch, took off first. The plan was for them to come in at 15,000ft, and lure out the Japanese. Next came the Hellcats, flying above the Kittyhawks. And the last were the Corsairs, who flew top cover. It was a long flight over open water, calculated to make the pilot of a single-engine aircraft nervous. If the engine failed it was a long swim home. They were intercepted by 35 Zeros, with the Kittyhawks getting the first jump on them. After the Kittyhawks made their first pass, shooting down a Japanese fighter, the advantage switched over to the more agile  Zeros. The Kittyhawk squadron leader’s plane was fatally damaged and a second Kittyhawk went down after colliding with a Zero. Remarkably, both pilots survived. Meanwhile the Hellcats and Corsairs, at high altitudes, were coming up empty. The Corsairs circled Lakunai field finding no targets. Pilot Boyington exchanged insults with an English-speaking Japanese officer over the radio, but despite his challenges found no targets in the air. When all aircraft returned to base, the score was even. Two Kittyhawks and two Zeros were lost; one each due to the collision and one shot down by both sides.

It was a rather disappointing fighter sweep, but would become just one of many against Rabual over the course of the next 3 weeks. The next raid came two days later seeing 48 B-24s launched, but 32 were forced turned back. The remaining 16 bombers escorted by 51 were intercepted by 94 Japanese fighters, yet they also suffered from the bad weather. Less than half made contact with the enemy. In the resulting fight, 5 Zeros were shot down and 10 allied aircraft were lost, but only two were shot down. The other eight were due to a mid-air collision and landing mishaps, all near home. The weather persisted to be so bad, it was only on the 23rd another sortie could be launched. B-24s escorted by Corsairs and Hellcats bombed Lakunai. Radar gave the Japanese some early warning and nearly 100 Zeros were scrambled. 60 made contact with the bombers after they hit Lakunai. No bombers were lost, but 2 Corsairs were shot down in the ensuing dogfights. Yet the Americans had a twist, they followed up the raid with a fighter sweep of 48 Corsairs. They arrived 15 minutes after the bombers left, surprising the airborne Japanese fighters, most of whom lacked radios. 6 Zeros were shot down, several others damaged and only 2 Corsairs lost.

2 days later, another fighter sweep preceded by bombers was launched claiming 18 aircraft kills, but it was probably closer to 5. In comparison the Japanese pilots would claim 55 kills, a number greater than the american force sent. On the 27 another sweep was launched against Cape Gloucester downing 7 Japanese aircraft for one American. 28 Corsairs returned the next day but this time the Japanese held the advantage, sandwiching the Marines between 2 large groups of Zeros. 3 Corsairs were shot down, but so were 3 Zeros, with 2 others badly damaged. On 30th 36 Liberators escorted by 20 Hellcats and 20 Corsairs, bombed Rabaul. 1 B-24 was lost on the raid, hit by antiaircraft fire. No air combat occurred. On New Years day 15 B-24s and 68 escorting fighters met heavy fighter opposition. 40 Zeros had been sent to Rabaul from Truk, manned by veteran pilots. 1 B-24 was shot down, and two others badly damaged. On January 2 48 US fighters raided and on the 3rd another 44. The two sweeps took out a handful of fighters. The last sweep was on the 5th seeing another 2 zeros downed.

Meanwhile back on December 24th, Admiral Sherman’s task force 37 raided Kavieng. The operation had two purposes, 1) was to distract attention from the landings at Cape Gloucester and 2) to interdict sea traffic between Truk and Rabaul. The 5000-ton naval transport Tenyru Maru was sunk and several other ships were damaged. After this task force 37 made several raids against Kavieng through January 4th. They managed to shoot down 10 Japanese fighters, damaged IJN cruiser Noshiro and destroyers Fumizuki and Satsuki. On Janaury 6th, the bomber strip at Piva became operational, thus Rabaul was now within range of allied light and medium bombers, basically it was pounding time.

On January 7th, 16 Avengers and 24 Dauntless raided Tobera airfield. From medium altitudes the Avengers dropped 2000lb pounds smashing the paved runways. The Japanese managed to shoot down 3 fighters and one dauntless, but Tobera was temporarily not operational. It was the first time any Rabaul airbase was neutralized from bomb damage. This would be followed up on the 11th by a low level attack against Vunakanau by B-25’s, damaging 8 parked aircraft. Then on the 14th, Simpson Harbor was attacked by 16 Avengers , 36 Dauntless and fighter escorts. The Japanese tossed 84 fighters but the allies held such a tight formation it was difficult to get at the bombers. 2 bombers were lost before reaching Lakunai; 1 to a mid-air collision and 1 to antiaircraft fire. When the Allied aircraft finally arrived, clouds shielded Lakunai so the bombers switched to targeting the ships in Simpson Harbor. The Avengers carried 2,000lb bombs, limiting their effectiveness. Regardless, they landed hits on the 15,400-ton-displacement oiler Naruto, and thus ended its goal of becoming the Hokage. . . sorry folks could not resist that one. The destroyer Matsukaze was also damaged alongside 5 other vessels.

AirSols came back to hit simpson harbor and blanche bay 3 days later sinking  the Komaki Maru, Kosei Maru, Yamayuri Maru, Hakkai Maru and Iwate Maru. To take down the combined 30,000 tons of shipping AirSols lost 8 P-38s, 1 Hellcat, 1 F4U, 1 Avenger, and 1 Dauntless. The rest of January saw so many raids, sometimes 2-3 on the same day, thus I can’t spend the entire podcast listing their actions, but the losses were brutal. For the Americans they would lose 23 aircraft between January 23rd-30th, for the Japanese it was around 37. By the end of the month, Rabaul was being bled dry of planes, thus the rest was withdrawn to Truk with around 40 pilots. To make up for the withdrawal, Admiral Koga brought over the air groups of carriers Junyo, Hiyo and Ryuho on the 25th adding 62 zeros, 18 vals and 18 kates to Admiral Kusakas dwindling forces. Does that not sound like performing the exact same action that saw such devastating losses in late december to early january? Yes, yes it does.

Moving over to New Britain, General Shepherd had just smashed the Japanese positions along Suicide Creek. While seizing Suicide Creek some Americans captured a Japanese dispatch saying “It is essential that we conceal the intention that we are maintaining positions on Aogiri Ridge. Concerning the occupation of this position, it is necessary that Aogiri Yama is maintained.” While making arrangements for the Japanese assault against Target Hill one, Lieutenant Abe had occasion sent field dispatches to Warrant Officer Kiyoshi Yamaguchi, one of his platoon leaders. The dispatch mentioned command post locations, hour of attack, and other orders. Yamaguchi, with that seemingly incredible indifference to basic security which the Japanese so often demonstrated, simply stuck the dispatch in his pocket and carried it with him to the assault. Marines found it on his body the following morning, thereby gaining their first inkling of the existence of a terrain feature which appeared as such on none of their maps but upon which the Japanese appeared to place great importance, for reasons not yet clear.

Aoigiri Ridge was not in the American maps and it was currently held by the 2nd battalion, 53rd regiment and 2nd battalion, 141st regiment. Behind the ridge was a wide trail leading to Magairapua, connecting Matsuda’s HQ with Borgen Bay. The trail was heavily used and concealed extremely well from American aircraft. Back over at the American lines, by January 5th, the 3rd battalion, 7th marines had pulled back into the reserve, allowing the weapons company, 7th marines to occupy the extreme left along the shore to prepare for Shepherds offensive against Hill 150. The new formation launched their attack at 11am on the 6th. Tanks surged forward to smash a roadblock held by the 2nd battalion, 141st regiment on the left trail. Artillery was deployed on a nearby hill hitting the Japanese lines as A company tried to break through but was quickly pinned down by the roadblock. The tanks eventually burst through the roadblock sending the Japanese packing.

The americans advanced through the increasingly swampy terrain, facing weaker resistance. B company crossed a small stream and stormed Hill 150 during the afternoon, securing it. Further right, C company and the 3rd battalion, 5th marines were surprised to be held up by extremely heavy fire from the until then unknown feature, Aogiri ridge. The men had no other choice than to pull back to a safe distance to dig in as they reported back the presence of the heavily fortified position. The Japanese would unleash carnage upon the men for 2 days whenever they tried to press forward. On the 7th the commanding officer of the 3rd battalion, 5th Marines, was wounded and replaced by Lt Colonel Lewis Walt. The next day, Walk’s men were cautiously inching forward under heavy enemy fire through dense jungle, when they first encountered the ground rising in steepness. At this point Walt realized the feature had to be Aogiri Ridge.

On the 9th, the assault battalions resumed their attacks, this time with heavy artillery support against Aogiri ridge. Walt was reinforced with Companies K and L from the 7th marines, but the advance was extremely slow and painful. Two Japanese bunkers were knocked out with white phosphorus grenades, but that ended the limited gains. Walt personally began pushing a 37mm gun excruciating foot by foot up Aogiri ridge, firing a volley of canisters every few feet. Somehow he managed to get the gun up the steep slope into a decent position to sweep the ridge, allowing the gain of a foothold on the crest of Aogiri. The loss of the ridge was a huge threat to Matsuda and Katayama’s positions, so the latter decided to throw his reserves in a desperate but ferocious counterattack.

At 1:15am on the 10th, Katayama sent his recently arrived 3rd battalion to attack the reverse slope. However the Marines held firm and would end up repelling 5 consecutive banzai charges with a fury and persistence unparalleled in the campaign. On the 4th try a Japanese major and two company officers succeeded in knifing through the Marine cordon almost to Colonel Walt's fox hole, 50 yards behind the front line. At that instant one of two short rounds in a 60-round artillery barrage burst in a tall tree almost directly overhead, and the major died there, sword in one hand and a pistol in the other. The 5th charge was blunted by artillery and the Japanese finally cut their losses and pulled back. The Japanese had suffered immense casualties, seeing all 3 of their battalions depleted, forcing Katayama to pull off Aogiri ridge that very night. The morning of the 10th saw Walk’s men securing the feature and then discovering the vital Magairapua trail. The marines went to work mopping up the area until January 12th, whereupon Shepherd planned to seize Hill 660. The feature was guarded by the 6th company, 141st regiment supported by a number of guns of the 30th machine cannon company. The fresh 3rd battalion, 7th marines, led by lt colonel Henry Buse Jr were to perform the main assault, with the 1st battalion extending the perimeter behind them. To help the effort, the weapons company,7th marines of Captain Buckley would begin constructing a roadblock between the eastern base of Hill 660 to the shore of Borgen Bay, hoping to cut off the defenders escape route.

At 08:00am on the 13th, after artillery, mortars and the 5th Air Force performed a bombardment of the area, the last Marine offensive commenced. A intricate system of small arms and automatic weapon positions going up the summit unleashed fire upon the marines, quickly pinning down I company. L Company attempted swinging to the right, but were also pinned down. Engineers worked a light tank forward far enough to place fire across a gorge demolishing the more troublesome enemy weapons. By late afternoon, together with artillery supporting fire, the pinned-down companies were rescued and withdrawn for the night. Meanwhile the Weapons company worked with their bulldozer, by 1030 they had skirted the eastern base of the hill and set up an all-around perimeter. There they dug in clearing fields of fire for about 60 yards to both north and south, placing their half-tracks and tanks in supporting positions. The only opposition they encountered during the advance was by two Japanese machine guns and emplaced near the summit of the hill. With all said and done they successfully cut off the Japanese line of retreat.

On the morning of the 14th, the 3rd battalion resumed their assault, with their leading companies advancing to the right working their way up. One unit nearly got atop the crest before coming under fire from heavy machine guns. They got to a position where they could bring 60mm mortars to bear, and went to work neutralizing the machine gun positions before a final surge carried them across the summit. The Japanese fled down the crest heading east, coming straight into the line of fire of the Weapons company below. The result was a terrible rout, seeing many escape to the safety of the swamps to the hills southeast. By the end of the 14th, the marines had seized Hill 660 and were performing mop up operations through the following day. At 5:30am on the 16th, Katayama ordered the 6th and 11th companies, 141st regiment to counter attack Hill 660. Soon the marines were face to face with a large banzai charge, seeing the fighting getting up close and personal. But small arms, rifles, 60mm mortars and 81mm artillery broke the Japanese. Over 110 Japanese bodies would be found after the fight. This ended Shepherds offensive, as the remnants of Colonel Sumiya’s forces began to arrive to the Borgen Bay area. Over the next few days, the exhausted 7th marines were relieved by the 5th marines and 2nd battalion, 1st marines who had recently been recalled after completing their mission at Green Beach.

After suffering the defeated in Borgen Bay, General Sakai decided to order the 1st battalion, 54th regiment to reinforce Talasea and for Matsuda to launch a last ditch effort, a suicidal one at that, to obliterate the enemy. But the men were in no condition for such an offensive, thus Katayama elected to postpone it for now. Since every man was needed for the defense of Borgen Bay, Colonel Sato took the remainder of his commander and departed Rooke Island to join the main body. Now that Hill 660 was secured, the Americans began a new method of patrolling; this time their patrols would specifically seek out and destroy what was presumed to be exhausted Japanese units, before the division would attack the defensive line at Borgen Bay-Itni river. Yet that is it for new Britian, as we are going to be traveling over to the CBI theater.

Between November 22 to December the 1st, two conference were held between the Allied leaders. The first was the Cairo or “sextant” conference on November 22-26th, between President FDR, Sir Winston Churchill and Chiang Kai-shek. The second was held in Tehran on November 28-December 1st between FDR, Churchill and Joseph Stalin. You might be asking, why did they all not meet up together. The crux of it was the Soviet-Japanese neutrality Pact and to a lesser extent, though probably not in Chiang Kai-Shek's mind, Stalin was aiding the CCP. Because the Soviets had not declared war on the Japanese, it would not look to good if they met with the leader of China, likewise Chiang Kai-shek was not too forthcoming to meet with Stalin. The easy fix was to just have two different conferences. Overall the conferences did not really touch too much upon the Pacific war. But Stalin did promise to declare war on Japan within ninety days after the end of the European War. In return he demanded military and logistical concessions in Manchuria, maintenance of Outer Mongolia under Soviet control as well as sovereignty over the Kuril Islands that stretched from north of Japan to Russia’s Kamchatka Peninsula. When Chiang Kai-shek heard about this he had suspicious and noted “The influence of this conference on China will be great. I hope Roosevelt isn’t plotting with Churchill and Stalin against me.” Soon his suspicion would turn to anger when he discovered there were secret protocols relating to Manchuria.  Stalin had made some assurances to Mao Zedong that once the Soviets were in the war against Japan, they would have forces to bear down into China to help tip the scale for the CCP against the NRA. Yet after the war, it would seem promises made by Joseph Stalin were not always kept.

Another important aspect of the conferences was the British decision to cancel Operation Buccaneer, the invasion of the Andaman Islands, because Admiral Mountbatten’s landing crafts were required for landings in southern france. The Joint chiefs of staff were livid at this, because it came at the same time the Japanese were reinforcing Burma. FDR overruled them and agreed to the British decision and this in turn greatly pissed off Chiang Kai-Shek. Yet at the same time, the Cairo declaration had lifted up the morale for the Chinese army and people to continue their war against the Japanese. The declarations made by the Tehran conference implied publicly that the CBI theater was all but abandoned to the mercy of Japan’s air and land forces. Thus it would be no coincidence the Japanese thought it ripe to launch an all-out offensive against China.

In the meantime, the rather aggressive Admiral Mountbatten was trying to salvage what he could of the situation. To try and please Chiang Kai-Shek, he proposed Operation Pigstick. The operation was something Mountbatten had wargamed a bit, it was to be a landing on the southern Mayu peninsula aimed at hitting Akyab. He began assigning landing craft for the amphibious operation, only to be immediately slapped down by Alanbrooke and told to return 3 fast tank landing crafts that were direly needed for operations against Italy. Mountbatten hoped to retain 2 slower tank landing craft, but Cunningham requested them. Pigstick was to be 2 divisions plus 2 brigades who would be used in a southward advance down the peninsula and 1 division in an amphibious assault aimed at surrounding and destroying not less than 20,000 Japanese. An additional landing similar to PIGSTICK, could perhaps be launched in the Ramree-Cheduba area, could take staging areas that would put 15 Corps within reach of Rangoon. Speaking of Ramree, if any of you have heard this kind of myth about over 1000 Japanese being eaten by crocodiles on that island, over on my personal channel the pacific war channel I did a full investigation into the so called “ramree island massacre” story. A little sad about its performance not going to lie. Dramatically improved my lackluster animation skills for it, came out really well and I did a silly impersonation at the beginning, anyways check it out its a fun one!

Alongside Pigstick, Mountbatten changed the Tarzan operation into Operation Gripfast, calling for an offensive on north and central Burma with an airborne landing at Indaw to sever the Japanese line of communications to Myitkyina. But now Chiang Kai-Shek was very wary of anything British, so he rejected the plans on December 19th. Alongside pissing off Chiang Kai-Shek, his estranged wife, Joseph Stilwell was also again angry with the British, particularly Mountbatten. At one point Mountbatten proposed moving certain American units into the Hukawng valley to help the offensive there and Stillwell burst out ‘I should like it placed on record that I am responsible for the training of all American forces in this theatre and I am the person to decide when they are adequately trained and can move forward.’ Mountbatten replied: ‘I accept that in principle, but would remind you that these troops are being trained under British officers. I am responsible for operations and will decide when units move into the fighting lines. In other words, general, I should like to place on record that I am Supreme Commander out here and what I say goes.’ Stilwell took it good-humouredly and laughed. ‘We none of us dispute that,’”. That day Stilwell wrote a letter to his wife, referring scathingly to Mountbatten as ‘the glamour boy. He doesn’t wear well and I begin to wonder if he knows his stuff. Enormous staff, endless walla-walla but damn little fighting . . . And of course the Peanut is unchanged. The jungle is a refuge from them both.’

The men would all share some screaming matches against another, until Stilwell would shock everyone by exclaiming “I am prepared to come under General Slim’s operational control until I get to Kamaing.” It was a truly bizarre idea, Mountbatten asked how such a thing would work, and both Slim and Stilwell asked to discuss the matter amongst themselves. The two men would agree on tactical essentials such as getting more Chinese divisions for the Ledo force and to use the Chindits to assist in hitting Myitkyina. Slim and Stilwell shook hands and Stilwell said to him ‘I would fight under a corporal as long as he would let me fight.’ Slim would later reflecte ‘In practice this illogical command set-up worked surprisingly well. My method with Stilwell was based on what I had learnt of him in the Retreat – to send him the minimum of written instructions, but, whenever I wanted anything, to fly over and discuss it with him, alone. Stilwell, talking things over quietly with no one else present, was a much easier and more likeable person than Vinegar Joe with an audience. Alone, I never found him unreasonable or obstructive. I think I told him to do something he did not approve of on only two or three occasions, and on each he conformed, I will not say willingly, but with good grace.’ In the end Operation Pigstick never became a reality, because the landing crafts were needed for the Italian campaign and thus the hope of meeting Chiang Kai-sheks continued demand for an amphibious operation was gone. It was almost like the British never intended to go through with such a thing in the first place, woops that is just my opinion.

Meanwhile the British-Indian command elected to start a new operation in Arakan. The brutal hard-won lessons of 1st Arakan battle had been absorbed in India Command, with senior British officers determined to avoid similar mistakes. The new operation was the subject of meticulous reconnaissance, planning, and rehearsals. A series of lectures, war games, models of the grounds and syndicate discussions were held for commanders, staff and regimental officers whom carefully considered countering Japanese offensive tactics and assaulting prepared defensive positions like those witnessed at Donbaik. A carefully planned programme of continuous, progressive and intensive training was put in hand for all corps and divisional fighting, support and administrative troops to practice necessary skills, including using brigade boxes, aerial resupply and the infiltration and envelop- ment of enemy positions. This comprehensive training programme culminated in intensive rehearsals and combined arms training with artillery, tanks and close support aircraft carried out near Lohardaga, over ground resembling Arakan, simulating attacks on mock Japanese defensive positions on jungle-clad hills.

General Auchinleck assigned the 15th corps, reconstituted at Ranchi with the 3 best trained divisions available: Major-General Harold Briggs’ 5th Indian Division; Major-General Frank Messervy’s 7th Indian Division and Major-General Christopher Woolner’s 81st West African Division.The 26th Indian Division formed the corps reserve. Command of the 15th corps would be given to Lt General Philip Christison. The plan called for the 5th and 7th Indian divisions to advance along the summit of the Mayu range towards Maungdaw and Buthidaung while the 5th and 6th west african brigades would provide flanking protection. On November 1st, the 2 Indian divisions began their advance and by mid november would make contact with a Japanese outpost.As the 7th Indian division advanced astride the Kalapanzin River they ran into stiff resistance. Efforts to dislodge Japanese defenders near Awlanbyin and Letwedet, showcased the formidable difficulties that attacking Japanese defensive bunker positions presented. Most were built on razor-back ridges, through which were burrowed fire positions, affording a limited approach, while the reverse slopes protected troops from view and bombardment. With the precipitous Goppe Pass initially only suitable for porters, pack transport and pack artillery, 7th Indian Division quickly devised other methods to overcome enemy defenses, since normal stereotyped, set-piece attacks stood little chance of success without supporting field artillery. Aircraft proved an ineffective substitute, moreover, with dive-bombing having only a transitory effect since the broken terrain and dense jungle absorbed blast leaving defenses and morale largely intact unless a lucky direct hit was made. The Indian forces began to infiltrate and bypass the well-entrenched Japanese defenses, giving the impression they would soon unleash a frontal attack upon them at any moment. General Messervy’s would say of the action  “'We will undoubtedly have a Neapolitan sandwich of British - Japs - British, but it will be one made by ourselves, and with the initiative in our hands it will soon be transformed to British - British - Jap.” They were gaining ground and with it valuable combat experience. On the night of November 30th, the 15th Indian Corps commenced large-scale operations to drive in the Japanese outpost line astride the Mayu Range. A series of brisk skirmishes were fought by 33rd Indian Infantry Brigade on the jungle-cloaked ridges south of Awlanbyin quickly evicting small determined parties of Japanese infantry from carefully prepared platoon and company defensive localities. This was by no means an easy task since most heavily camouflaged positions were built atop steep hillsides overlooking paddy fields that provided an open field of five and difficult going for advancing troops. Earlier directions about infiltration paid off in practice. An attack on Awlanbyin west redoubt from the rear through thick jungle achieved complete surprise. Although a neighboring Japanese position initially held out, its garrison withdrew on 2nd December after being cut off. The 33rd Brigade columns  crossed the Ngakyedauk Chaung and occupied the area from Ngakyedauk village to the ridge about 1.5 miles north-west of Sinohbyin village. By December3rd, they extended the area of operation to the hills overlooking Maungyithaung and Sinohbyin. The 89th Brigade, meanwhile, pushed forward down Tatmin Chaung and established forward positions on the hills south of the chaung, one mile west of Tatmingyaungywa. By mid-month, 7th Indian Division had reached the main enemy positions covering the Tunnels and Buthidaung, and the opening of the Ngakyedauk Pass to wheeled traffic in late December considerably eased resupply and allowed the divisional artillery to join the formation. However, both the Indian divisions were under orders not to get engaged in serious fighting with the Japanese, so the advance stopped there.

It is also important to note, in November 1943,  Spitfires were deployed in Bengal for the first time. The 615th and 617th squadrons were based in Chittagong to protect the vital port and also to cover the Arakan. Within one month, the Spitfires destroyed four Japanese photographic reconnaissance aircraft. Previously, the Dinah’s range, speed and height had enabled them to fly with impunity over the Allied forward bases and the Hurricanes were unable to catch them. The Japanese reacted by sending out fighter sweeps in order to test the Spitfires and whittle down Spitfire strength. However, by the end of December, the Japanese lost 22 aircraft, another 33 were damaged, and the Allied loss was only 13 aircraft. The greatest air battle occurred on the last day of 1943. On that day, No. 136 Squadron destroyed 12 and damaged 11 when a mixed force of Japanese fighters and bombers attempted to attack the light naval force along the Arakan Coast. The Japanese carried out one strategic attack when on 5 December 1943, 60 bombers and fighters, including some naval aircraft, in two waves bombed Calcutta. The Japanese lost two aircraft and another five were damaged. The three and a half squadrons of Hurricane fighters, including half a squadron of night fighters which were defending the area lost five aircraft and another six were damaged.

To the west the 5th Indian Division had also encountered stiffening resistance from Japanese outposts as it advanced southwards along the coastal plain towards Maungdaw, through the foothills further north and along the spine of the jungle-clad Mayu Mountains. They soon discovered that overcoming Japanese bunker defenses presented particular difficulties. As the division would report "The great difficulty in attacking Jap "hill top" positions lies in the concealment of the actual bunker or weapon pit' one brigade commander later wrote, and in the practical impossibility of deploying attacking troops in thick jungle, particularly where the approach runs along the top of a razor backed ridge.' In each case, patrols infiltrated between these localities isolated them from supplies and reinforcements with the result that Japanese normally gave up ground without a contest. A newsletter prepared by the HQ of 5th Indian Division reported: 'The only way to deal with the Jap def positions is by INFILTRATION. Recent experience has shown that the Jap has produced nothing new in def tactics... It is almost physically impossible in hilly and thick country to have every post covered by another, the posts can be eliminated piece- meal by infiltration tactics.' After the outline of the main Japanese defenses became apparent this approach was also increasingly applied at brigade level. At the end of December 1943, the 5th Indian Division held the area from the sea to the crest of the Mayu Peninsula and the 7th Indian Division moved into the Kalapanzin Valley. By the end of the month they reached Maungdaw.

The advancing 5th Indian Division discovered that frontal assaults could not be completely avoided, however, when Japanese troops were determined to stay put. During this advance, the 161st Brigade moved to the high ground to the northeast of Bakkagona about five miles to the north of Razabil. On 30th December, 161st Indian Infantry Brigade assaulted Point 124, but the 4/7th Rajputs were held up by dense jungle and heavy mortar and machine fire and suffered heavy casualties. For six days assaults continued with the forward infantry regularly reaching the Japanese defenses before being driven off by showers of hand grenades and supporting machine-gun from every other enemy defensive position within range. Only after a 'policy of strangulation, starvation, and attrition was adopted', did its defenders withdraw. The 5th Indian Division immediately began probing the main Razabil defenses, while its 123rd Indian Infantry Brigade patrolled the western foothills of the Mayu Range and northern side of Razabil, particularly two hill positions dubbed Wrencat and Wrenkitten. To do so an indirect approach was again advocated by Major-General Harold Briggs in note on tactical policy issued on 4th January, stressing the importance of patrolling to identify positions held by the Japanese and infiltration to seize vital ground in their flanks or rear that would either provoke Japanese counterattacks or force a withdrawal.

Meanwhile Stilwell arrived to Shingbwiyang on December 21st and assumed command of the Chinese forces in India. To relive the trapped battalion of the 112th regiment at Yupbang Ga, Stilwell and General Sun planned to send the entire 114th regiment to break the Japanese center at Yupang Ga to rescue the 112th, then hook north to envelope the northern fragment of the Japanese defensive line. On December 24th, they unleashed artillery and launched the infantry into the Japanese lines. The 114th regiment managed to envelop the Japanese right flank by the afternoon and soon a breakthrough emerged allowing for them to make contact with the 112th. Sun’s men then surrounded the Japanese pocket during the night and would wipe them out the next morning. And thus the Chinese had gained their first