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505th Bombardment Group
Active 1944-1946
Country United States
Branch United States Army Air Force
Engagements World War II Victory Medal ribbon.svg Asiatic-Pacific Campaign ribbon.svg
  • World War II
Asiatic-Pacific Campaign (1944-1945)

The 505th Bombardment Group is an inactive United States Air Force unit. Its last assignment was with Thirteenth Air Force, stationed at Clark Field, Phillipines. It was inactivated on 30 June 1946

The unit served primarily in the Pacific Ocean theater of World War II as part of Twentieth Air Force. The 505th Bomb Group's aircraft engaged in B-29 Superfortress bombardment operations against Japan. It's aircraft were identified by a "K" (January to March 1945) or "W" (April to September 1945) inside a Circle painted on the tail.





  • Constituted as 505th Bombardment Group (Very Heavy) on February 28, 1944.
Activated on March 11, 1944
Inactivated on June 30, 1946


Attached to 17th Bombardment Operational Training Wing (Very Heavy), 1 Apr-6 Nov 1944


  • 482d Bombardment Squadron: 1944–1946
  • 483d Bombardment Squadron: 1944–1946
  • 484th Bombardment Squadron: 1944–1946
  • 485th Bombardment Squadron: 1944




The unit was constituted as the 505th Bombardment Group (Very Heavy) on February 28, 1944 and activated on March 11, 1944. Equipped first with B-17 Flying Fortresses, then later trained for overseas duty with B-29 Superfortresses.

Moved to Tinian late in 1944. Assigned to XXI Bomber Command, Twentieth Air Force. Entered combat in February 1945 with strikes on Iwo Jima and the Truk Islands. Then began daylight missions against Japan, operating at high altitude to bomb strategic objectives.

Received a Distinguished Unit Citation for a strike against the Nakajima aircraft factory at Ota in February 1945. Conducted incendiary raids on area targets in Japan, carrying out these missions at night and at low altitude. Bombed in support of the Allied assault on Okinawa in April 1945. Engaged in mining operations against Japanese shipping, receiving second DUC for mining the Shimonoseki Strait and harbors of the Inland sea, June–July 1945.

After V-J Day, dropped supplies to Allied prisoners, participated in show-of-force missions, and flew over Japan to evaluate bombardment damage. Moved to the Philippine Islands in March 1946. Inactiuated on Luzon on June 30, 1946.


PD-icon.svg This article incorporates public domain material from websites or documents of the Air Force Historical Research Agency.

  • Maurer, Maurer (1983). Air Force Combat Units Of World War II. Maxwell AFB, Alabama: Office of Air Force History. ISBN 0892010924.

External links


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