The 505th Bombardment Group is an inactive United States Air Force unit. Its last assignment was with Thirteenth Air Force, stationed at Clark Field, Philippines, where it was inactivated on 30 June 1946. After organizing and training in the United states, the group served in the Pacific Ocean theater of World War II as part of Twentieth Air Force. The group's Boeing B-29 Superfortress engaged in the strategic bombing campaign against Japan from January through August 1945, earning two Distinguished Unit Citations.