Battle of the Bismarck Sea
During and after the Battle of the Bismarck Sea (March 3–5, 1943), U.S. PT boats and Allied aircraft attacked Japanese rescue vessels as well as approximately 1,000 survivors from eight sunken Japanese troop transport ships. The stated justification was that the Japanese personnel were close to their military destination and would be promptly returned to service in the battle. Many of the Allied aircrew accepted the attacks as necessary, while others were sickened.