40th Bomb Group History
40th Bomb Group
Constituted as the 40th Bombardment Group (Medium) on 22 Nov 1940. Activated in Puerto Rico on 1 Apr 1941. Redisgnated 40th Bombardment Group (Heavy) in May 1942. Patrolled the Canbbean and Pacific, using B~I7, B-18, and B-24 aircraft. Operated first from Puerto Rico and later from the Panama Canal Zone. Moved to the US in Jun 1943. Redesignated 40th Bombardment Group (Very Heavy) in Nov 1943.
After training with B-29's, moved to India, via Africa, Mar-Jun 1944. Assigned to Twentieth Air Force in Jun 1944. Transported supplies over the Hump to staging bases in China before entering combat with a strike on railroad shops at Bangkok, Thailand, on 5 Jun 1944. On 15 Jun 1944 participated in the first AAF attack on Japan since the Doolittle raid in 1942. Operating from bases in India, and at times staging through fields in China, the Group struck such targets as transportatIon centers, naval installations, iron works, and aircraft plants in Burma, Thailand, China, Japan, Indonesia, and Formosa, receiving a Distinguished Unit Citation for bombing iron and steel works at Yawata, Japan, on 20 Aug 1944. From a staging field in Ceylon, it mined waters near the port of Palembang, Sumatra, in Aug 1944. Moved to Tinian, Feb to Apr 1945, for further operations against Japan. Made daylight attacks from high altitude on strategic targets, participated in incendiary raids on urban areas, and dropped mines in Japanese shipping lanes. Received a Distinguished Unit Citation for attacking naval aircraft factories at Kure, oil storage facilities at Oshima, and the industrial area of Nagoya, in May 1945. Bombed light metal industries at Osaka in Jul 1945, being awarded another Distinguished Citation for this mission. After V-J Day, dropped food and supplies to Allied prisoners in Japan, Korea, and Formosa, and took part in show-of-force missions. Returned to the United States in Nov 1945. Assigned to Strategic Air Command on 21 Mar 1946. Inactivated on I Oct 1946.
SQUADRONS
| 25th | 1943-1946 |
| 29th | 1941-1943 |
| 44th | 1941-1946 |
| 45th | 1941-1946 |
| 74th | 1942-1943 |
| 343rd | 1945-1946 |
| 395th | 1942, 1943-1946 |
STATIONS
| Borinquen Field, Puerto Rico | 1 | Apr | 1941 |
| Howard Field, Canal Zone | 16 | Jun | 1942 |
| Albrook Field, Canal Zone | 16 | Sep | 1942 |
| Howard Field, Canal Zone | 3 | Jun | 1943 |
| Pratt Army Air Field, Kansas | 1 | Jul |
1943 to 12 Mar 1944 |
| Chakulia. India | 2 | Apr |
1944 to 25 Feb 1945 |
| Tinian, Marianas | 4 | Apr |
1945 to 7 Nov 1945 |
| March Field, California | 27 | Nov | 1945 |
| Davis-Monthan Field, Arizona | 8 | May |
1946 to 1 Oct 1946 |
COMMANDING OFFICERS
| Lt. Col. William B. Sousa | 1 Apr 1941 |
| Maj. George W. McGregor 29 Apr | 1941 |
| Col. Ivan M. Palmer | 26 Nov 1941 |
| Col. Vernon C. Smith 19 Jan | 1943 |
| Col. Henry K. Mooney 16 May | 1943 |
| Col. Lewis R. Parker | 1 Jul 1943 |
| Lt. Col. Louis E. Coira 24 Feb | 1944 |
| Col. Leonard F. Harman 10 Apr | 1944 |
| Col. William H. Blanchard | 4 Aug 1944 |
| Col. Henry R. Sullivan 16 Feb | 1945 |
| Col. William K. Skaer 27 Feb | 1945 |
| Lt. Col. Oscar R. Schaaf | 21 Mar 1946 |
| Col. Alva L. Harvey | 4 May 1946 |
| Lt. Col. Oscar R. Schaaf | 21 Aug 1946 |
| 1st Lt. William F. Seith | 21 Sep to 1 Oct 1946 |
CAMPAIGNS Anti-Submarine, American Theater
India-Burma
China Defensive
Western Pacific
Central Burma
Air Offensive, Japan
Source: 40th Bomb Group Association Website