AEF Roundel
Date used: pre to 1926

Where fitted: Used on aircraft of the American Expeditionnary Force, fitted to the wings and in conjunction with the AEF tail flashing.


AEF Flash
Date used: pre to 1926

Where fitted: Fitted on both sides of the tail and used in conjunction with the American Expeditionnary Force roundel.


USAAC Roundel
Date used: 1926 to 1942

Where fitted: Roundel of the United States Army Air Corps. Fitted to the upper port and lower starboard wing or both upper and lower wings on earlier aircraft. Used in conjunction with the USAAC tail flashing.
Boeing Stearman (Old Warden 2010) Boeing Stearman (Old Warden 2010) Ryan PT-22 (Old Warden 2010) Ryan PT-22 (Old Warden 2009) Ryan PT-22 (Old Warden 2008) Ryan PT-22 (Old Warden 2007)


USAAC Flash
Date used: 1926 to 1942

Where fitted: Fitted on both sides of the tail and used in conjunction with the United States Army Air Corps roundel.
Ryan PT-22 (Old Warden 2009) Ryan PT-22 (Old Warden 2009) Beech Model 18 (Abingdon 2004)


USAAF Roundel
Date used: 1942 to 1943

Where fitted: After the attack on Pearl Harbour on 7th December 1941, the red circle was removed from the roundel to avoid any possible confusion with the Japanese roundel (the Hinomaru). Fitted to the upper port and lower starboard wing and both sides of the fuselage.
T-6 Texan (Old Warden 2010) B-17 Flying Fortress (Duxford 2010)


USAAF Roundel
Date used: 1942 to 1943

Where fitted: Along with the RAF, a yellow border was adopted on the roundel and could be used as an alternative to the standard roundel.


USAAF Variant
Date used: Mid 1943

Where fitted: In an attempt to distinguih the roundel further a red border with side bars was adopted but quickly replaced by the blue border and blue side bars. Fitted to the upper port and lower starboard wing and both sides of the fuselage.
B-25 Mitchell (Duxford 2009) B-25 Mitchell (Duxford 2009)


USAAF Variant
Date used: 1943 to 1947

Where fitted: The final variant to the war time roundel included a blue border and blue side bars. It was initiated during the Pacific theater and went on to be the normal roundel until 1947. Fitted to the upper port and lower starboard wing and both sides of the fuselage.
P-51 Mustang (Old Warden 2010) P-51 Mustang (Old Warden 2010) Curtiss P-40 Warhawk (Abingdon 2009) DC-3 Dakota (Abingdon 2009)


USAF Roundel
Date used: 1947 to present

Where fitted: In 1947 the United States Air Force (USAF) was formed independent of other armed services and adopted a modified roundel containing a red stripe within the side bars. Fitted to the upper port and lower starboard wing and both sides of the fuselage.
Skyraider (Old Warden 2010) Skyraider (Duxford 2010) F8F Bearcat (Duxford 2010) F15A Eagle (Duxford 2008) F-86 Sabre (Kemble 2009) F-86 Sabre (Kemble 2008)