The Piva airfields (shown here in February 1944 photograph) became key bomber and fighter strips in the aerial offensive against Rabaul.

The landing force had seized the beachhead, destroyed or overcome the enemy, and won the ground for the vital airfields. Now they prepared to leave, as the airfields were being readied to reduce Rabaul and its environs.

Since 10 December, F4U Vought Corsairs of Marine Fighting Squadron (VMF) 216 (1st Marine Aircraft Wing) had settled on the new strip on Torokina, almost washed by the sea. The fighter planes would be the key to the successful prosecution of the AirSols (Air Solomons) offensive against Rabaul, for, as escorts, they made large-scale bombing raids feasible. Major General Ralph J. Mitchell, USMC, had become head of AirSols on 20 November 1943. By 9 January 1944, both the fighter and bomber aircraft were operating from the Piva strips. Following Bougainville, Mitchell would have twice the airpower and facilities that the Japanese had in all of the Southwest Pacific area.

The campaign had cost the Marines 423 killed and 1,418 wounded. Enemy dead were estimated at 2,458, with only 23 prisoners captured.

It was now time for the 3d Marine Division to go home to Guadalcanal, with a “well done” from Halsey. (In the Admiral’s colorful language, a message to Geiger said, “You have literally succeeded in setting up and opening for business a shop in the Japs’ front yard.”) Now there would be plenty of papayas and Lister bags, as well as a PX, a post office, and some sports and movies. General Turnage was relieved on 28 December by Major General John R. Hodge of the Americal Division, which took over the eastern sector. The 37th Infantry Division kept its responsibility for the western section of the Bougainville perimeter. Admiral Halsey directed the Commanding General, XIV Corps, Major General Oscar W. Griswold, to relieve General Geiger, Commanding General, IMAC. The Army assumed control of the beachhead as of 15 December. The 3d Marines left Bougainville on Christmas Day. The 9th left on 28 December, and had a party with two cans of beer per man. The 21st, last to arrive on the island, was the division’s last rifle regiment to leave, on 9 January 1944.

Every man in those regiments knew full well the crucial role that the supporting battalions had played. The 19th Marines’ pioneers and engineers had labored ceaselessly to build the bridges and trails that brought the vital water, food, and ammunition to the front lines through seemingly impassable swamps, jungle, and water, water everywhere.

A chaplain reads prayers for the burial of the dead, while their friends bow their heads in sorrow at the losses.

From the Leach File, MCHC Archives

And the amtracs of the 3d Amphibian Tractor Battalion had proven essential in getting 22,922 tons of those supplies to the riflemen. They were “the most important link in the all-important supply chain.”