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The New Georgia Group Operation (June 20-October 16, 1943) stands as one of the Pacific Theater's most grueling campaigns, where American forces battled through dense jungles and fierce naval engagements to capture the strategic Munda airfield. This pivotal Solomon Islands operation earned veterans the Asiatic-Pacific Theater ribbon with campaign star, marking a crucial step toward victory over Japan.
June 20 – October 16, 1943
The New Georgia Group Operation was a series of land and naval battles forming part of Operation Cartwheel, the Allied strategy in the South Pacific to isolate the Japanese base around Rabaul. The campaign took place in the New Georgia Islands in the central Solomon Islands and followed the Allied capture of the Russell Islands. Undertaken by Allied forces, predominantly United States Army and Marine units, with substantial contributions from New Zealand and Australia, this campaign sought to neutralize Japanese positions in the Central Solomons and hasten the encirclement of the major Japanese bastion at Rabaul.
The operation represented a critical stepping stone in the American advance through the Solomon Islands chain. Once captured, that airfield could be turned to American use in order to support the further advance toward Bougainville and Rabaul. The strategic importance of Munda Point's airfield made it the primary objective of the entire campaign.
Task Force 31, the amphibious force led by Rear Admiral Richmond K. Turner, USN, landed at various points on New Georgia on June 30, 1943, beginning a campaign that lasted until the Japanese evacuated Vella Lavella on October 7. The operation was codenamed Operation Toenails and placed under the overall command of Admiral William F. "Bull" Halsey.
Primary Allied Forces:
The 43rd was reinforced by elements of the 1st Marine Raider Regiment, 9th Marine Defense Battalion, elements of the 37th Division, naval construction battalions, and elements of the 70th Coast Artillery Battalion (antiaircraft). The Navy provided significant support with nine cruisers, twenty-nine destroyers, and three escort carriers, with a strong contingent (over 500 aircraft) of both Army and Navy aircraft.
By June 1943, there were 10,500 troops on New Georgia and 9,000 on Kolombangara, all under the command of General Minoru (Noboru) Sasaki, well dug in and waiting for an Allied attack. The Japanese forces consisted of:
Japanese Southeastern Detachment:
Around 30,000 U.S. troops were committed to actions around Munda throughout July and August, while the Japanese allocated around 8,000 troops. The U.S. troops were under the command of Griswold, commander of XIV Corps, and the Japanese force was commanded by Major General Minoru Sasaki of the Southeast Detachment.
A total of 6,000 soldiers, sailors and marines of the US Army's 172nd Infantry Regiment, the 9th Marine Defense Battalion, and the Navy's 24th NCB landed at Rendova Harbor early on 30 June while Companies A and B of the 169th Infantry Regiment along with the New Zealand-trained and led commando unit of 130 South Pacific islanders took three strategic islets in the Blanche Channel opposite Munda.
On 30 June 1943, elements of the 43rd Infantry Division, supported by U.S. Marine and naval units, landed on Rendova, encountering comparatively limited resistance. Pre-positioned artillery on Rendova proved instrumental; according to a U.S. Army after-action report, "Rendova's occupation gave us an unassailable gun platform from which to direct sustained fire on Munda's airfield."
The initial landing points were Viru, Wickham Anchorage, Segi Point, Onaiavisi, and Rendova, which proved vital for the capture of the airfield at Munda Point on August 5. These dispersed landings created multiple axes of advance and forced the Japanese to defend on multiple fronts.
The New Georgia campaign featured some of the most intense naval combat of the Solomon Islands campaign, with Japanese "Tokyo Express" destroyer runs attempting to reinforce their garrison while American cruiser-destroyer task forces sought to intercept them.
The battle involved United States and Japanese ships off the eastern coast of Kolombangara in the Solomon Islands. It took place during the early stages of the New Georgia campaign when a Japanese force landing reinforcements at Vila was intercepted by a force of US Navy cruisers and destroyers.
American Forces:
Japanese Forces:
One US light cruiser was sunk during the engagement while two Japanese destroyers were sunk and two more were damaged. The Japanese withdrew after the engagement, having landed 1,600 troops. The USS Helena was struck by three Japanese Long Lance torpedoes and sank with 168 casualties.
This force was commanded by Rear Admiral (少将 shōshō) Shunji Isaki and consisted of the light cruiser Jintsū, the destroyers Mikazuki, Yukikaze, Hamakaze, Kiyonami and Yūgure, as well as the destroyer transports Satsuki, Minazuki, Yūnagi, and Matsukaze.
This engagement proved costly for both sides, with the Japanese losing the light cruiser Jintsū but successfully landing 1,200 reinforcements on Kolombangara.
The Battle of Vella Gulf was a naval battle of the Pacific campaign of World War II fought on the night of 6–7 August 1943 in Vella Gulf between Vella Lavella and Kolombangara in the Solomon Islands of the southwest Pacific. This engagement was the first time that American destroyers were allowed to operate independently of the American cruiser force during the Pacific campaign.
American Destroyer Force:
Japanese Force:
The American warships closed the Japanese force undetected with the aid of radar and fired torpedoes, sinking three Japanese destroyers with no damage to American ships. This marked the first decisive American night destroyer victory against the Japanese.
The Americans landed reconnaissance elements around Zanana on New Georgia on 30 June; this marked the start of the New Georgia campaign. These were followed by main force elements from Major General John H. Hester's 43rd Infantry Division on 2 July 1943, crossing from Rendova where they had landed on 30 June.
The assault on Munda Point became a grueling jungle warfare campaign characterized by:
American Equipment:
Japanese Equipment:
The new attack began on July 25, with the 43rd Division now receiving support from the 25th and 37th Divisions, as well as M5 Stuart tanks manned by US Marines, along with artillery, air strikes, and US Navy gunfire.
It was on New Georgia where the 43rd Infantry Division experienced the highest number of cases of neuropsychiatric casualties (variably known as combat fatigue, shell shock, war neurosis, or post-traumatic stress disorder) casualties in any division during one operation in the entire war.
Casualties from disease were numerous, as were psychological casualties, with over 2,500 troops being diagnosed with "war neurosis" between 30 June and 30 September. The intense jungle warfare, Japanese night attacks, and harsh tropical conditions created unprecedented psychological strain on American forces.
Both sides employed significant air assets during the campaign:
American Aircraft:
Japanese Aircraft:
The capture of Munda airfield was crucial for establishing Allied air superiority in the central Solomons and supporting future operations toward Bougainville.
General Oscar Griswold, commanding the US Army's XIV Corps, arrived on New Georgia on July 11 and looked over the situation. "Things are going badly," he reported, and the 43rd Division seemed ready to "fold up." His reward for this report was appointment as commander of the campaign to capture Munda Point.
The command structure underwent significant changes as the campaign progressed:
The significant naval battles during this campaign were Kula Gulf, Kolombangara, Vella Gulf, and Vella LaVella. In these engagements, the Japanese continued to display their successful night-fighting skills. However, the cumulative losses in ships, aircraft, and experienced personnel proved unsustainable for Japanese forces.
On August 5, 1943, the soldiers and Marines overran the remaining Japanese defenders, and captured the airfield. Within two weeks it would again be operational, this time servicing US aircraft in the continuing, and ultimately victorious, campaign to capture the Solomons.
The Japanese conducted a strategic withdrawal from the central Solomons, evacuating their forces to more defensible positions closer to Rabaul. The campaign began on 30 June 1943, when US troops carried out landings in the Kula Gulf, in the north of New Georgia, and around the Munda area on the western coast. It concluded with the Japanese evacuation of Vella Lavella on October 7, 1943.
The New Georgia Group Operation achieved its strategic objectives but at significant cost. The campaign provided valuable lessons for future amphibious operations and demonstrated both the capabilities and limitations of American forces in jungle warfare conditions. The successful capture of Munda airfield and the naval victories, particularly at Vella Gulf, marked a turning point in the Solomon Islands campaign and paved the way for the eventual Allied advance on Bougainville and the neutralization of Rabaul.
Primary Sources Cited:
Additional Reading:
