509th Bomb Group

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509th Bomb Group
509th Composite Group aircraft some time after their bombing mission of Hiroshima. Left to right: Big Stink , The Great Artiste , and Enola Gay…
509th Composite Group aircraft some time after their bombing mission of Hiroshima. Left to right: Big Stink , The Great Artiste , and Enola Gay… Photo: photo taken by Harold Agnew on Tinian Island in 1945 · Public domain · via Wikimedia Commons
TypeOrganization
Also known as509th
On the Timeline5 events, 1947–2020

The 509th Bomb Group, originally the 509th Composite Group, was the U.S. Army Air Forces unit that dropped the atomic bombs on Hiroshima and Nagasaki in 1945. Based at Roswell Army Air Field in New Mexico from November 1945, it was the unit whose officers announced the recovery of a "flying disc" in July 1947.[1][2]

Formation and the atomic missions

First Ordinance Squadron Area
First Ordinance Squadron Area Photo: Air Force Historical Research Agency · Public domain · via Wikimedia Commons

The group was activated on 17 December 1944 at Wendover Army Air Field, Utah, under Lieutenant Colonel Paul Tibbets, with a squadron of specially modified B-29 bombers and a transport squadron. It moved to North Field on Tinian in the Pacific in May 1945. On 6 August 1945 the B-29 Enola Gay, flown by Tibbets, dropped the "Little Boy" bomb on Hiroshima, and on 9 August Bockscar, commanded by Major Charles Sweeney, dropped the "Fat Man" bomb on Nagasaki.[1]

Roswell

William Blanchard: General William H. Blanchard, VCSAF in an official USAF photo. Original in color. NARA Citation 342-B-12-004-KE16732
William Blanchard: General William H. Blanchard, VCSAF in an official USAF photo. Original in color. NARA Citation 342-B-12-004-KE16732 Photo: Alfred I. Sherman · Public domain · via Wikimedia Commons

The group returned to the United States and was stationed at Roswell Army Air Field from 6 November 1945. Colonel William Blanchard replaced Tibbets as commander on 22 January 1946. On 21 March 1946 it became one of the original groups of the new Strategic Air Command, and on 10 July 1946 it was redesignated the 509th Bombardment Group, Very Heavy.[1]

In July 1947, after rancher Mac Brazel reported debris near Corona, the group's intelligence officer, Major Jesse Marcel, collected it and the base announced the recovery of a "flying disc". The group's own history for July 1947 recorded that the public information office was kept busy answering enquiries about the disc, which turned out to be a radar-tracking balloon. In 1995 the U.S. General Accounting Office found that this history was one of only two surviving 1947 government records about the event.[2][3]

Later history

Illustration of a government hearing
Illustration: a government hearing. An artist's impression drawn for this site, not a photograph of the event.

The group converted to B-50 bombers in 1950 and was inactivated on 16 June 1952; its lineage continues in the 509th Operations Group, activated in 1993.[1]

On the UAP Timeline

Skyline of Roswell, New Mexico, looking south along Main St
Skyline of Roswell, New Mexico, looking south along Main St Photo: Vasiliymeshko · CC BY-SA 4.0 · via Wikimedia Commons

References

This page was last edited on 29 October 2026. Articles are written in our own words from the sources listed under References; disputed claims are attributed to the people who made them.

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