Generals.dk

Served variously as Commanding Officer of the 10th School Group, Assistant Commandant of the Advanced Flying School, Director of Attack Training, and President of the Board on Attack Aviation, Kelly Field, Texas

Commanding Officer of the 3d Attack Group, Kelly Field, Texas

Instructor at the Air Service Tactical School, Langley Field, Virginia

Commanding Officer of the 2d Bombardment Group, Langley Field, Virginia

Additional duty as member of the Bombardment Board, Langley Field, Virginia

Student at the Command and General Staff School, Fort Leavenworth, Kansas

Commanding Officer of the 88th Observation Squadron, Post Field, Fort Sill, Oklahoma and Air Corps Instructor at the Field Artillery School, Fort Sill, Oklahoma

Commanding Officer of the 6th Group (Composite) and France Field, Panama Canal Zone; later, Commanding Officer of the Panama Air Depot and Air Officer, Panama Canal District

Instructor at the Command and General Staff School, Fort Leavenworth, Kansas

Commanding Officer of Barksdale Field, Louisiana

Commanding Officer of the 17th Bombardment Wing, Savannah, Georgia

Commanding Officer, later Commanding General of the Third Air Force, Tampa, Florida (supported the Louisiana Army GHQ Maneuvers, 15.09.41-19.09.1941 and 24.09.41-28.09.1941, by establishing and operating two Air Corps maintenance commands)

Commanding General of the Philippine Department Air Force, Nichols Field, Luzon (Brereton arrived at Manila from the United States on 04.11.1941; succeeded Brigadier-General Henry B. Clagett who had been commanding the air force since 20.09.1941)

Commanding General of the Far East Air Force, Nichols Field, Luzon; from 23.12.1941, Darwin, Australia; from 14.01.42-05.02.1942, Java

Additional duty as Acting Commanding General of the U.S. Army Forces in Australia (USAFIA)

In the absence of British Air Marshal Sir Richard E. C. Peirse, Brereton assumed the additional duty as Deputy Air Commander of the American-British-Dutch-Australian Command under British General Sir Archibald P. Wavell

Commanding General of the Fifth Air Force, Java (This air force ceased functioning on 24.02.1942, the day Brereton departed for India to organize the Tenth Air Force. Until the Fifth Air Force was re-manned six months later, USAAF forces were under control of the American-British-Dutch-Australian Command and then the Allied Air Forces in the Southwest Pacific. The Fifth Air Force was not re-manned until 03.09.1942 when it assumed control of USAAF organizations in Australia and New Guinea.)

Organizer and Commanding General of the Tenth Air Force, New Delhi, India

Commanding General of the U.S. Army, Middle East Air Forces (USAMEAF)(attached to the British Western Desert Air Force, commanded by Air Vice Marshal Sir Arthur Coningham), Egypt

Additional duty as Commanding General of the Headquarters Desert Air Task Force (DATF), Egypt (exercised administrative control over the American units operating as an integral part of the British Western Desert Air Force)

Commanding General of the Ninth Air Force, Egypt; from 16.10.1943, England

Additional duty as Commanding General of the U.S. Army Forces in the Middle East (USAFIME)

Commanding General of the First Allied Airborne Army, England; from 00.02.1945, France

Commanding General of the Third Air Force, Tampa, Florida

Commanding General of the First Air Force, Mitchel Field, New York

Member of the Joint Chiefs of Staff Evaluation Board, Office of the Secretary of War, Washington, D.C., responsible for advising the commander of Joint Task Force One, Vice-Admiral William H. P. "Spike" Blandy, and then evaluating results of atomic tests at Bikini Atoll (Operation CROSSROADS)

Temporary duty as an observer for Operation CROSSROADS, the detonation of two atomic bombs against a fleet of 94 test vessels arrayed in Bikini Atoll in the Marshall Islands on 01.07.1946 (Test ABLE, air drop) and 25.07.1946 (Test BAKER, underwater detonation)

Chairman of the Military Liaison Committee to the Atomic Energy Commission, Washington, D.C.

Secretary General of the Air Board, Washington, D.C.

Retired