This series of United States Army Air Corps and United States Navy insignia was sponsored by the Works Progress Administration (WPA) Art Program. Paul Garber directed the painting of these insignia. They were originally on display in the aeronautical section of the Smithsonian "Tin Shed".

The 2nd Bombardment group was reformed in 1924. During the interwar period, the unit fewl and and consolidated with a group that was organized in the US as 1st Day Bombardment Group on 18 Sep 1919 and redesignated 2d Bombardment Group in 1921. Used LB-5A, B-10, B-17 (1937-), B-15 (1938-), and other aircraft during the 1920's and 1930's. Engaged in routine training; tested and experimented with equipment and tactics; participated in maneuvers; took part in Mitchell's demonstrations of the effectiveness of aerial bombardment on battleships; flew mercy missions to aid victims of a flood in Pennsylvania in 1936 and victims of an earthquake in Chile in 1939; and made goodwill flights to South America in the late 1930's. Redesignated 2d Bombardment Group (Heavy) in 1939. Trained with B-17's.

Served on antisubmarine duty for several months after the US entered World War II. Moved to North Africa, Mar-May 1943, and remained in the theater until after V-E Day, being assigned first to Twelfth and later (Dec 1943) to Fifteenth AF. Flew many support and interdictory missions, bombing such targets as marshalling yards, airdromes, troop concentrations, bridges, docks, and shipping. Participated in the defeat of Axis forces in Tunisia, Apr-May 1943; the reduction of Pantelleria and the preparations for the invasion of Sicily, May-Jul 1943; the invasion of Italy, Sep 1943; the drive toward Rome, Jan-Jun 1944; the invasion of Southern France, Aug 1944; and the campaigns against German forces in northern Italy, Jun 1944-May 1945. Engaged primarily in long-range bombardment of strategic targets after Oct 1943, attacking oil refineries, aircraft factories, steel plants, and other objectives in Germany, Poland, Czechoslovakia, Austria, Hungary, Yugoslavia, Rumania, and Greece. En route to bomb a vital aircraft factory at Steyr on 24 Feb 1944, the group was greatly outnumbered by enemy interceptors, but it maintained its formation and bombed the target, receiving a DUC for the performance. On the following day, while on a mission to attack aircraft factories at Regensburg, it met similar opposition equally well and was awarded a second DUC. Served as part of the occupation force in Italy after V-E Day. Inactivated in Italy on 28 Feb 1946.