509th Composite Group | |
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![]() 1946 emblem of the 509th Composite Group while part of the 58th Bombardment Wing, Very Heavy | |
Active | 17 December 1944 – 10 July 1946 |
Country | United States |
Branch | ![]() ![]() |
Type | Bombardment and air transport composite |
Role | Atomic warfare |
Size | 1767 personnel, 15 B-29 and 5 C-54 aircraft |
Part of | 313th Bombardment Wing Twentieth Air Force |
Garrison/HQ | North Field (Tinian), Mariana Islands |
Engagements | ![]() ![]()
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Commanders | |
Notable commanders | Paul Tibbets |
The 509th Composite Group (509 CG) was a unit of the United States Army Air Forces created during World War II. They tasked with the operational deployment of nuclear weapons. It conducted the atomic bombings of Hiroshima and Nagasaki, Japan, in August 1945.