The 43d Bombardment Group trained for bombardment operations during most of 1941.
From December 1941 to February 1942, it flew antisubmarine patrols along the New England coast.

It then moved to the Southwest Pacific via Cape Town, South Africa, from February to March 1942.
It attacked Japanese shipping in the Netherlands East Indies and the Bismarck Archipelago from bases in Australia, New Guinea, and Owi Airfield, Indonesia between August 1942 and November 1944.

While there it earned a Distinguished Unit Citation (DUC) for missions over Papua, New Guinea from August 1942 to January 1943.

The unit used skip bombing to sink Japanese ships during the Battle of the Bismarck Sea, 2–4 March 1943, for which the unit earned a second DUC.
It also provided support for ground forces on New Guinea and attacked airfields and other enemy installations in New Guinea, the Bismarck Archipelago, Yap, Palau, and the southern Philippines in 1943 and 1944.

The group conducted long-range raids on oil refineries on Ceram and Borneo late in the war.

After moving to the Philippines in November 1944, the group attacked shipping along the Asiatic coast and struck factories, airfields, and other installations in China and on Formosa.
It also supported ground forces on Luzon.

The unit moved to Ie Shima in July 1945, from which it conducted raids against airfields and railways in Japan and against shipping in the Inland Sea and the Sea of Japan.
It was moved, on paper, to the Philippines in December 1945 and inactivated in April 1946.
The 43d Bombardment Group trained for bombardment operations during most of 1941. From December 1941 to February 1942, it flew antisubmarine patrols along the New England coast.
It then moved to the Southwest Pacific via Cape Town, South Africa, from February to March 1942. It attacked Japanese shipping in the Netherlands East Indies and the Bismarck Archipelago from bases in Australia, New Guinea, and Owi Airfield, Indonesia between August 1942 and November 1944.
While there it earned a Distinguished Unit Citation (DUC) for missions over Papua, New Guinea from August 1942 to January 1943.
The unit used skip bombing to sink Japanese ships during the Battle of the Bismarck Sea, 2–4 March 1943, for which the unit earned a second DUC. It also provided support for ground forces on New Guinea and attacked airfields and other enemy installations in New Guinea, the Bismarck Archipelago, Yap, Palau, and the southern Philippines in 1943 and 1944.
The group conducted long-range raids on oil refineries on Ceram and Borneo late in the war.
After moving to the Philippines in November 1944, the group attacked shipping along the Asiatic coast and struck factories, airfields, and other installations in China and on Formosa. It also supported ground forces on Luzon.
The unit moved to Ie Shima in July 1945, from which it conducted raids against airfields and railways in Japan and against shipping in the Inland Sea and the Sea of Japan. It was moved, on paper, to the Philippines in December 1945 and inactivated in April 1946.
43rd Air Mobility Operations Group