- 102 - Pacific War - The Battle of Empress Augusta Bay, October 31 - 7 November, 1943

 

Last time we spoke about the invasion of the Treasury Islands. The time had come to begin operations against Bougainville, but in order to do so the allies had a few tricks up their sleeves. In order to make sure the landings at Cape Torokina at Empress Augusta Bay went safely, the allies would perform raids against Choiseul and the Treasury islands. It was hoped such actions would work as a diversion and confused the Japanese as to where the real operations were aimed. The landing on Mono saw some New Zealanders and Americans annihilate a 200 strong Japanese garrison. On Choiseul Paratroopers boldly raided a force 6 times larger than them. The raid was a success and thanks to John F Kennedy the Paratroopers were grabbed off the island before the Japanese could obliterate them. In the end the landings at Cape Torokina were a success and now a battle would be unleashed. 

This episode is the battle of Empress Augusta Bay

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. 

So last time we covered the planning behind Operation Cherryblossom, the landings at Cape Torokina. As a means of confusing the enemy, the allies also chose to invade the Treasury islands and raided Choiseul. With Operation Cherryblossom in full swing, so begins the Bougainville campaign which we are going to be diving into now. At the end of October, after successfully invading the Treasury islands and the extremely bold attack upon Choiseul where the Paratroopers were outnumbered 6-1, combined with General Kenny’s 5th air force and AirSols neutralizing Rabaul and nearly every airfield on Bougainville, the landings at Cape Torokina were finally launched. In a final act to aid operation cherryblossom, Admiral Sherman’s Task force 38 departed Espiritu Santo on October 28th and Admiral Merrills Task Force did the same from Florida island on November 1st. They hoped to rendezvous near the Buka Passage three days later so they could prepare an attack against the Buka and Bonis airfields. 

During the morning of November 1st, Admiral Merrill’s cruisers arrived to their station and began firing upon the arifields. Then Sherman’s carriers arrived off Buka passage to launch two separate air strikes. The first airstrike consisting of eighteen fighters, fifteen dive bombers, and eleven torpedo bombers hit Buka just after daylight. The second consisting of fourteen fighters, twenty-one dive bombers, and eleven torpedo bombers hit Buka again at midmorning. The airstrikes managed to shoot up a number of small ships within the harbor. Meanwhile after firing 2700 5 and 6 inch shells all over Buka and Bonis’s airfields, Merrils task force 39 departed the Shortlands to bombard Poporang, Ballalo and Faisi. 

On November 2nd, Sherman performed air strikes against Buka and Bonis’s fields before departing south for Guadalcanal. Within those two days the Americans estimated they had destroyed around 30 aircraft and several small ships at the cost of 11 aircraft lost. The attacks had rendered the two Japanese airfields closest to Empress Augusta Bay basically unusable for when the landings would be made. The Japanese were now convinced that any invasion of Bougainville would have to be countered with all the aircraft and ships available within the southern theater. Yet they could not concentrate their entire naval and air forces against the Solomons, because the American and Australian forces on New Guinea would most likely be performing a landing on New Britain at any moment. Admiral Koga also expected the Americans to attempt a landing in the Gilbert or Marshalls. Thus the two pronged allied strategy was serving to freeze the Japanese army units within the New Guinea and Solomon areas. 

Meanwhile Admiral Wilkinson’s task force 31 were making final preparations for transport the 3rd Marine division. The amphibious assault would be facing a landing area defended by roughly 270 men. Once they overcame them, a defense perimeter would have to be hastily made because it was certain the Japanese commander on Bougainville would hammer them hard. General Vandergrift's plan was to land the 3rd and 9th marine regiments of Colonel George McHenry and Colonel Edward Craig and the 2nd raider battalion of Lt Colonel Joseph McCaffery abreast on 11 designated beaches covering a distance of 8000 or so yards. The 3rd raider battalion lt be Lt colonel Fred Beans would land at the same time on Puruata island to overcome an estimated 70 Japanese defenders there. Wilkinson wanted to land the forces abreast as quickly as possible and to have the transport unload the supplies off the bay by nightfall because he expected a rapid Japanese response, similar to what had occurred at Savo island. 

On October 28th, General Turnage’s men departed the New Hebrides in 20 combat transports and cargo ships commanded by Commodore Lawrence Reifsnider. The convoy proceeded using different routes, hoping to prevent the Japanese from discovering the size of their force, the three transport divisions would rendezvous with Wilkinsons destroyers by October 31st. Once linked up they would approach Bougainville under the cover of naval PBYs and Liberators. During the morning of November 1st, Minesweepers led by the destroyer Wadsworth were sent in to clear mines from the landing areas and to determine how dangerous the shoals were. The minesweepers found no mines, but did find plenty of uncharted shoals. Wadsworth radar confirmed that Cape Torokina’s position within their naval charts was misplaced. Wadsworth had a number of tasks ahead of her. In addition to helping with the fire support at a range of around 3000 yards, she was to use her radar to confirm the actual location of Cape Torokina, Puruata island and the landing beaches. The coast of Bougainville had been chartered by the German Admiralty in 1890. The Germans had placed Cape Torokina and Mutupina Point around 9 miles southwest of their actual locations. Thankfully the submarine USS Guardfish reported that the air force and naval charts had misplaced Cape Torokina by around 7 miles and this is why Wadsworth was sent to investigate. Unsexy logistical stuff, but gravely important, as you don't want to waste any time during an amphibious landing searching for a lost beach. Wilkinson decided not the land the men until after daylight when it was possible to detect the offshore shoals.

Shortly before sunrise, the minesweepers and destroyers began their bombardment. The Sigourney and Wadsworth fired at ranges of 13,000 yards upon Puruata Island, while the Terry bombarded closer to the shore of Cape Torokina. As each transport passed the cape, they fired 3 inch anti-aircraft guns hoping to hit Japanese positions or at least minimize their artillery. By 6:45am the transports began arriving off the beaches around 3000 yards from the shore. At 7:10am the LCVP’s began taking men ashore. Simultaneously Wilkinsons destroyers began systematically bombarding the perimeter while 31 bombers from New Georgia bombed and strafed the landing areas. Within a few minutes around 7500 troops, roughly half of the total force were scrambling ashore and unloading with great speed and smoothness. The preliminary bombardment had failed however to smash the well concealed Japanese machine gun nests located on the southern beaches. These machine gun nests unleashed their lead upon the landing craft. The landing craft bearing a third of the force had immediately come under fire from Puruata island and some pillboxes on Cape Torokina. The 3rd raiders in particular were hit by machine gun fire from Puruata. Around 4 land craft were sunk from this, 10 others were badly damaged, over 70 men would be lost in the process. 

The 9th marines landed themselves on 5 beaches to the north and were lucky to find little resistance from the Japanese. Once ashore they sorted themselves out quickly and began to move inland to discover the terrain was a nightmare. The beaches where they were led straight into some impassable swamp land. Nevertheless where there is a will there is a way, the marines began using fallen logs and debris to traverse the swamp until they came across some solid ground. By midmorning they would establish a narrow perimeter and began patrolling the greater area. They would establish a strong outpost on the Laruma River by 1pm. The boat crews were experienced a lot of issues with the high surf, combined with a lock of experience amongst them. Some of the LCVPS found themselves smashing into another, some dropped their men in deep water, some did not lower their ramps properly and the marines were forced to toss themselves over the sides into waist deep water. More than 30 landing craft were wrecked during the initial phase of the operation. Around 64 LCVPS and 22 LCMS were beached, many with damage beyond repair. 

The 3rd marines and 2nd raiders would have a hell of a time landing. The 3rd marines landing south of the Koromokina river, they had no issues with shoals, nor the high surf, but they had landed directly in front of the main Japanese defenses. There was roughly 300 Japanese, but they did not have permanent defenses along the beaches of Yellow 2, Blue 2, and Blue 3. As the 3rd marines landed they began fighting with some Japanese killing many and sending them fleeing into the Jungle. Patrols were quickly organized who worked alongside the 2nd raiders patrols to fan out. The raiders upon landing found tougher resistance in the form of a reinforced platoon operating out of two bunkers and trenches located 30 yards inland. Once the raiders had blasted out the bunkers, the remaining Japanese began to retreat into the jungle. Like the 9th marines they would find swamp lands ahead of Yellow 1 making it difficult to advance. By midmorning the raiders reached the Buretoni Mission Trail. The main Japanese resistance hit the men who landed at Blue 1, just adjacent to Cape Torokina. There the Japanese had constructed 25 large and small log and earthen pillboxes around the perimeter of the cape. There were trenches connecting the pillboxes, some of the larger pillboxes measuring 6 feet by 6 feet, containing 75mm field guns. Each pillbox was covered by earth and camouflaged using jungle plants. Only 3 pillboxes had been hit by the naval and aerial bombardments prior to the landings. When the Americans hit the beaches in the area they immediately were forced to charge into the enemy bunkers. The Japanese 75 mm gun at Cape Torokina caused havoc upon the attackers. It was a well placed log and sand bunker and its approaches were protected by two smaller bunkers with a series of trenches manned by numerous Japanese. Sergeant Robert Owens of A company, 3rd marines grabbed 4 marines and charged the two small bunkers directly upon the mouths of some machine guns. The marines entered an emplacement through a fire port and drove the gun crew out. The surrounded trenches concentrated their fire on the brave marines, Sergeant Owns would be found later dead riddled with bullets. He was posthumously awarded the Medal of Honor for the action. Lt Colonel Joseph McCaffery was immediately mortally struck four times in the chest as he led the marines forward, he was replaced temporarily by Major Alan Shapley for the 2nd raiders.

Despite the horrible losses the Americans cleared the Japanese positions and pushed further inland to pursue and kill the fleeing defenders. It is worthy to mention over 24 Doberman Pinschers, the official dog of the USMC between 1943-1945 from the 1st marine dog platoon proved invaluable during this point of the battle. The dogs were able to point out hidden snipers concealed in underbrushed. 549 War dogs would return from the war with only 4 not being able to return to civilian life, all very good boys. The 3rd raiders landing at Puruta had nearly all their boats shot at, but it was mostly small machine gun fire and did little to no damage. The Japanese had 3 or 4 deep well sandbagged emplacement on the seaward side where their machine guns nests fired upon the raiders. It took the raiders two hours upon landing to secure their beachhead around125 yards inland. Beans committed his reserves early in the afternoon, supported by some 75mm guns borrowed from the 9th marines, they moved halfway across the island, encountering sporadic Japanese sniper fire. The Japanese were outnumbered, by 3:30pm their resistance all but ended. The marines suffered 5 deaths and 32 wounded, around 29 dead Japanese would be found. They estimated another 70 Japanese escaped to Bougainville. 

Soon after all the landing craft began to pull out, the Japanese began launching air strikes. For around two hours the transports and supply ships were zigzagging for their lives to evade dive bombers and fighters coming from Rabaul. The first air strike consisted of 9 Vals and 44 Zeros, they hit at around 7:35am almost immediately after the landings were made. General Twinning’s 8 Kittyhawks and 8 P-38s managed to fight them off, downing 7 Japanese aircraft. The Wedsworth received a near miss during the battle. 10 minutes later, AirSols beat off another attack taking down another 8 Japanese aircraft. During the last attack, roughly 70 Japanese aircraft came in around 1pm and were met by 34 AirSols fighters. After all three attacked, the Japanese has used around 120 aircraft and lost 26, inflicting no serious damage to allied ships nor the marines ashore. But the air attacks did result in major delays for the unloading of supplies for some hours.

To try and speed up the unloading process, Wilkinson stripped some men from the assault units to help unload cargo ashore. Additionally Wilkinson employed a method of light combat loading. It would take some days for the beaches to be fully sorted out, while the naval forces departed Empress Augusta Bay before nightfall to return to Guadalcanal. Thus 14,000 men and 6200 tons of supplies had been successfully placed ashore in 8 hours. By the end of the first day the marines had contested a ⅓ sector and reached their initial objectives, digging in uncomfortably for the night under torrential rain. The divisional perimeter was established by forward landing teams, who had very little to work with for maps. To the extreme left of the perimeter would be Company G of the 9th marines, who were in a vulnerable spot along the Lrauma river. Lucky for them the Japanese were quite disorganized and many were located southeast of Cape Torokina. At dusk there was only sporadic sniper fire directed at the ⅓ in the vicinity of the cape plantation and later an attack was made against the 2nd raiders at a roadblock they established along Mission Trail. General Turnage was now the official owner of a new lodgement on Bougainville.

Generals Imamura and Hyakutake were quite slow to react to the landings. They sent the Iwasa detachment led by Major General Iwasa Shun, commanding the 6th infantry group. Backing him up would be the 1st and 3rd battalions of the 23rd regiment. Their first task was to hit the new enemy beachhead. As predicted by the allies, Admirals Kusaka and Samejima mustered every naval and aerial strength they had to try and smash the invaders. As part of Operation RO, Admiral Koga had sent over 250 aircraft from the 5 carriers of Admiral Ozawa’s air fleet. Koga specifically stated the bulk of these were only going to be loaned for a short time, obviously they would have to return to the main fleet. Well the invasion of Bougainville certainly upset the plans, the planes would not be coming back on schedule. As Admiral Fukudome SHigeri, Koga’s Chief of staff would later note “although the planes were not originally to be used in such offensive operations, we could not just stand by and not employ them."

By midday on October the 31st, the Japanese had discovered the American task force that had departed Guadalcanal en route for Bougainville. The IJN were determined to interrupt the operation. Kusaka sent a cruiser-destroyer task force led by Vice admiral Omori Sentaro. Departing Rabual Omori had the two heavy cruisers, Myoko and Haguro; two light cruisers, Sendai and Nagara; and two destroyers. Now Omori was the commander of Cruiser division 5 of the Combined fleet, not of the 8th fleet. He just happened to be at Rabaul covering the movement of the 17th division at the time, he was given command of his division and the main strength of the 8th fleet. Omori sailed out at 3pm in the direction of the Shortland islands believing that to be the allied target. Poor weather hindered his force and his search planes failed to locate any allied ships. Thus by 9am on November the 1st he was on his way back to Rabaul. Yet right as his ships were turning around, suddenly they received reports that the Americans had hit the beaches of Cape Torokina.

Omori was quickly reinforced with a destroyer squadron and a destroyer transport group consisting of the Amagiri, Fumizuki, Uzuki, Yunagi and Minazuki each carrying 200 troops of a 1000 special trained raider group of the 17th division. This was the 2nd mobile raiding units from the 2nd battalion, 54th regiment led by Major Miwa Mitsuhiro. They were going to perform a counter landing against the marines at Mutupino point near the village of Toroko, due south of the marine beachhead. Within 6 hours, Omoro departed once again to hit the enemy fleet, but he lacked a real battle plan. At 6:30pm Omori rendezvoused with the transports at the St. George channel and together they proceeded towards Bougainville. At 7:20 the convoy was spotted by an american bomber who dropped a bomb nearly hitting the Sendai. Based on this Omori knew the Americans knew he was coming so he concluded a counterlanding was far too dangerous. Instead he decided to send the slower destroyer transports back to Rabaul. Omori believed the enemy transports were still in Empress Augusta Bay, thus if he could sneak in and destroy them, the marines would be stuck on the island without much of their supplies and without hope of quick rescue. 

Meanwhile Merrills task force 39 had retired to the vicinity of Vella Lavella, but soon received news of Omori’s incoming convoy. Halsey had to order his only naval force in the area to go out once again to protect the beachhead and intercept the enemy. Merrills crews had been at it for more than 24 hours by this point and were quite exhausted. Now Merrill’s force went in very cautiously, because they were aware the Japanese would be outgunning them and of course the IJN held the dreaded long lance torpedoes. Thus Merrill chose to detach his destroyers who would go out in front to see if they could intercept Omori’s forces before the long lances could be put to use. He intended to take the fight to the west of Empress Augusta Bay where he could block the enemy from the beachhead. He had his leading destroyers 3 miles ahead and deployed his forces along a north-south axis with the cruisers in the center, maintaining a range of 19,000 yards or more from the deadly IJN destroyers and their feared long lances. His plan was to exploit the offensive capabilities of his destroyers by letting them unleash their attacks before he would have his cruisers unleash their 6 inch guns. He hoped his destroyers would be able to sneak into range and hit the Japanese destroyers before they could launch their torpedo salvos.

Omori was at a disadvantage intelligence wise, he had no idea about Merrills forces whereabouts. Moreover he had to rely on spotter planes because he was forewarned their radar would give away their location to the enemy if used. As Omori would later tell interrogators  “We had some modified aircraft radar sets in action but they were unreliable. I do not know whether the sets or operators were poor, but I did not have confidence in them.” Thus he had no idea of the position or size of the American flotilla, still he believed the enemy transports were in the bay, though in reality they would be nearly 40 miles south.

Omori still lacking any real battle plan arrayed his force in three columns with his two heavy cruisers Myoko and Haguro in the center; Ijuins screen of light cruiser Sendai; and destroyers Shiratsuyu, Samidare and Shigure to the left and rear admiral Osugi Morikazu’s screen of light cruiser Agano; and destroyers Wakatsuki, Hatsukaze and Naganami. As the Japanese approached the area, task force 39 were sailing 20 miles west of the beachhead. Merrills flagship Montpelier was the first to make radar contact with the enemy at 2:30 on November 2nd. Omori’s fleet was 35,900 yards out. Merrill’s changed his course to head due north then reversed south with his cruisers to find a favorable position to try and cross Omori’s T. Merrill sent Commander Bernard Austins destroyed out to hit the Japanese southern flank while Captain Burke was ordered to take an intercept course that would force the Japanese to be in a vulnerable position for the destroyers to launch torpedoes into their left flank.

At 2:45am a Japanese aircraft finally spotted the Americans and began dropping flares over them to allowed the light cruiser Sendai to lead the northern column over. However by this point it was all but too late for the Japanese. Burke had closed in on their left flank and launched 25 torpedoes at Ijuin’s column. After launching the torpedoes Burke had his ships separate and it would be an hour before they could all be gathered again to form a full circle and return to their firing positions. The battle would be very chaotic, the US destroyers experienced a hard time trying to maintain contact with each other and several times would fire upon each other by accident. All 25 torpedoes would miss, because Omori ordered his ships to make a hard right turn.

At 2:50 the Samidare launched a full salvo of 8 torpedoes which missed their main targets but a single torpedo managed to hit the destroyer USS Foote blowing up a large part of her stern. Cruiser Cleveland and destroyer Spence would accidentally run into each other doing light damage trying to avoid the damaged Foote. Merrill could no longer wait for the results of the destroyer attacks and ordered his cruisers to open fire at 2:50am. Merrills cruisers would unleash a continuous fire using their 6 inch guns while maintaining a coordinated figure 8 pattern to confuse the enemy and avoid torpedoes. The tactic had been very well rehearsed and the commanders were perfectly in tune with another. James Fahey, a sailor aboard Merrill’s flagship Montpelier, described the long night illuminated by lightning, flares, star shells, and muzzle flashes. “The big eight inch salvos, throwing up great geysers of water, were hitting very close to us. Our force fired star shells in front of the Jap warships so that our destroyers could attack with torpedoes. It was like putting a bright light in front of your eyes in the dark. It was impossible to see. The noise from our guns was deafening.”

The Sendai was the first to be hit taking a 6 inch shell to her rudder before it exploded near her boiler rooms. Sendai experienced a series of explosions and quickly sank. The destroyers Samidare and Shiratsuyu behind the Sendai collided with another trying to evade the naval gunfire and would end up taking positions around the stricken Sendai already sinking by this point. Merrill then shifted the focus to the other two Japanese columns forcing Osugi’s column to head west running across Omori’s cruisers. The Hatsukaze tried to move between two heavy cruisers and collided with the Omori’s flagship Myoko at 3:07. Hatsukaze was so crippled by the collision she was much easier to hit as a result was found by Burkes reformed 45th destroyer division by 5:30am and 5 of the destroyers proceeded to batter her with shells until she sank at 5:40am. The Myoko meanwhile was hit by 6 shells, but fortunately for her 4 of them were duds, not causing enough damage to slow down the flagship.

Next the USS Spence and Thatcher ran into another, but were able to carry on the fight. Both sides were having trouble running into each other, Merrills cruisers performing the 8 pattern at high speed allowed them to evade most gunfire. At 3:20 Omori opened fire with his heavy armament, both torpedoes and naval gunfire from his cruisers. The torpedoes missed, but 3 dud shells hit Denver into her forward section, causing water to slow the ship down. The other cruisers were forced to slow their speed to match her. Light cruisers Columbia received a 8 inch shell hit, luckily it also failed to explode. The Japanese fire was becoming heavier and more accurate forcing Merrill to respond with a smoke screen in front of his cruisers. Merrill made sure to keep his distance from the Japanese. When their range closed in on 13,000 yards at 326 am he ordered a 180 degree turn to the north. The radical maneuvering by Merrills cruisers made it extremely difficult to accurately fire upon them, but also for Merrills cruisers to hit Omori’s. At 3:30am Omori decided to retire in the mistaken belief that his Long Lances had sunk or heavily damaged Merrill’s cruisers. Omori had received a false report claiming “one torpedo hit on leading US cruiser, two torpedo hits on second US cruiser, two torpedo hits on third US cruiser. Shell fire also reported on US Force.” In the meantime Burkes destroyers had re-entered the fray of battle and began firing upon the doomed Sendai. After they pursued the Shiratsuyu and Samidare but both destroyers got extremely lucky when Commander Austin confused Burke into believing that the ship he saw turning northwards was actually the Spence. By 4:00am the Sendai was sinking taking with her 185 crew. Ijuin and 311 other survivors would later be rescued on November 3rd by Submarine RO-104. The Hatsukaze would be the last to sink at 5:40am.

As dawn was breaking, Merrill urgently called for all available fighters to come to his aid as he expected the Japanese to toss the kitchen sink of air forces at him. Just before 8am a formation of 80 Zeros and 18 dive bombers arrived and began attacking his cruisers desperately performing anti-aircraft maneuvers. The allied aircraft were delayed by bad weather resulting in only 8 Hellcats, 1 marine corsair, 3 P-38s and 4 New Zealander P40s showing up. The allied pilots would claim to down 16 Japanese aircraft, though in reality it would only be 8. Merrills forces performing a defensive circular cordon would claim to down 17 further Japanese aircraft. The Japanese managed two hits, one causing minor damage to the USS Montpelier. The Japanese had lost their chance to stop the invasion of Bougainville. Merrills handling of the battle, particularly his figure 8 maneuver, had negated the dreaded super weapon of the enemy, the Type 93 long lance torpedo. It was to be the last major surface engagement of the Solomons area. Halsey would later reflect on the Japanese attempt to hit the landing forces at Cape Torokina  “was the most desperate emergency that confronted me in my entire term as COMSOPAC (Commander South Pacific).” Commodore Reifsnider was ordered to bring his transports back to Cape Torokina to resume the unloading. The unloading of the cargo would be completed by 3pm.

Vice admiral Omori’s force withdrew back to Rabaul. It was soon joined by four more cruisers and a number of destroyers from Truk. The reluctant Admiral Koga according to Admiral Fukudome decided to commit some of the very best units from the undamaged 2nd fleet “to cooperate with the carrier-based planes which had been sent from Vice-Admiral Ozawa’s fleet in order to check the [US] Bougainville operations.” 7 heavy cruisers, the Takao, Maya, Atago, Suzuya, Mogami, Chikuma, and Chokai; a light cruiser, the Noshiro; four destroyers; and a number of service ships would depart Truk on November 3. The once dominant IJN fleet so surely footed in the early days of the war now was hesitant and indecisive. Nevertheless, Koga would unleash another attack against Empress Augusta Bay. Koga placed the new naval force under Admiral Kurita who would attempt to intercept futher American forces enroute to Bougainville. On November 4th, Wilkinson would be bringing the 21st marines aboard 8 destroyer transports and 8 LSTs. 3548 men led by Colonel Evans Ames, alongside 5000 tons of supplies and equipment escorted by destroyers Waller, Saufley, Philip, Renshaw, Eaton and Sigourney. 

Halsey received word of the new Japanese force and realized the situation was critical. If Halsey did not turn back the incoming threat, his forces on Bougainville would not receive their planned reinforcements. Halsey was thus ready to take a risk, he was going to send carriers. As Halsey would later write “perhaps the success of the South Pacific War, hung on it being stopped.”. Against conventional wisdom, that carriers should not be exposed to land-based aircraft attacks, he ordered Rear Admiral Sherman’s task force built around the USS Saratoga and Princeton to face a force of possibly 200 Japanese aircraft. The risks for Hasley were personal as well as professional “I sincerely expected both air groups to be cut to pieces and both carriers stricken, if not lost. (I tried not to remember my son Bill was aboard one of them), but we could not let the men at Tokorina be wiped out while we stood by and wrung our hands.” Halsey’s Chief of Staff, Admiral Carney, recalled that before making the decision to attack with his carriers, his commander “suddenly looked 150 years old.” Shermans task for now designated Task Group 50.4 consisted of carrier Saratoga; light carrier Princeton; and destroyers Stack, Sterett, Wilson, Izard, Conner, Bell, Charrette, Boyd, Bradford and Cowell. He would be supported by General Twinings AirSols in any way possible. Halsey also requested MacArthur allow Kenney’s 5th air force to join in on the battle.

On November 5th, aided by some bad weather, a surprise air raid was performed against Rabaul. Sherman’s carrier force was 230 miles away from Rabaul near Cape Torokina when they began launching aircraft at 9am. The Saratoga launched 16 Avengers and 22 Dauntless. Princeton launched 7 Avengers. The carrier aircraft were escorted by 52 hellcats making a formation of 97 aircraft in all. This was their entire payload . The aircraft flew at a low level as they approached Rabaul anti-aircraft defenses by 10:20. They kept a tight formation, flying right through the flak which prevented the 70 Zeros from intercepting them properly. As we have seen during this series, the Japanese anti-aircraft guns were honestly pretty terrible. Added to this, the American aircraft enjoyed much better armor than their Japanese counterparts, particularly the Zero fighter.

Commander Henry Caldwell led the bombers towards Blanche Bay where they peeled off at 14,500 feet. The Dauntless dive bombed the targets before them as the Avengers time their approaches to hit the same targets at the same time. Within just 30 minutes the attack absolutely devastated the Japanese plans. Heavy cruiser Maya was trying to leave the harbor during the attack but took a 500 lb bomb hit to her catapult area which set off a series of explosions, blowing up her engine rooms and causing heavy casualties. As Maya was left fully disabled, the Mogami managed to clear the harbor but took a torpedo hit. Her number 1 and 2 turrets were flooded, forcing her crews to scramble to put out fires.  The Atago suffered three very near misses, which damaged her hull, armament, and machinery.  The Takao took a bomb to her starboard side, damaging her hull and machinery. TheChikuma received only slight damage and was able to depart for Truk at 20:38. The Suzuya, which was just preparing for refueling, tried to evade and was only slightly damaged. Aside from this the other light cruisers and destroyers did not receive any damage. 70 sailors died aboard the Maya, 23  died aboard the Mogami, Takao and Atago. Captain George Chandler, 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.”

Taking advantage of Hasleys daring attack, General Kenney sent 27 B-24’s and 67 P-38s to bomb the warehouse area on the western side of the harbor. They were challenged by only 15 Zero’s who would lose two in the process. The Japanese facilities were wrecked by the attack. The Americans lost 5 bombers and 5 fighters while taking down 11 Zeros.

The cautious Admiral Mineichi Koga withdrew his forces back to Truk. The Japanese Naval threat to the invasion of Bougainville was ended. A Japanese naval officer later admitted 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 success of the raid on Rabaul left Halsey ecstatic. “It is real music to me and opens the stops for a funeral dirge for Tojo’s Rabaul.”

Sherman grabbed all of his returning places expecting a Japanese counterstrike. A Japanese scout plane discovered Sherman’s task force around midafternoon and Kusaka immediately dispatched eighteen torpedo bombers after the Americans. At around dusk the Japanese discovered what they believed to be the task force and attacked. Although they later claimed a great air victory, in reality they hit at an LCI and a PT boat escorting an LCT back from Cape Torokina. A torpedo lodged in the engine room of the LCI and killed one man. That was the extent of the damage to the "task force." In return, the Japanese lost one plane. It was hardly an even exchange, and no compensation at all for the havoc wreaked earlier upon the 2nd Fleet. Halsey yet again showed what a formidable and aggressive commander he could be, his gamble paid off greatly. The Americans had secured their naval superiority in the South Pacific and it would remain that way for the rest of the war.

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Admiral Merrill performed an excellent battle against a larger IJN force. Admiral Hasley lived up to his reputation, he performed a bold gamble and it paid off big time. Now the Americans would dominate the South Pacific for the rest of the Pacific War.