Under American control, Ninth Air Force used the base for several units from 7 September 1944 until closing the base in July 1945. Known units assigned were:[12]

439th Troop Carrier Group, 8–28 September 1944 (C-47 Skytrain)

404th Fighter Group, 13 September-4 October 1944 (P-47 Thunderbolt)

365th Fighter Group, 15 September-4 October 1944 (P-47 Thunderbolt)

36th Fighter Group, 1–27 October 1944 (P-47 Thunderbolt)

367th Fighter Group, 28 October 1944 – 1 February 1945 (P-38 Lightning)

368th Fighter Group, 27 December 1944 – 5 January 1945 (P-47 Thunderbolt)

410th Bombardment Group, February–May 1945 (A-20 Havoc)



Each group had three or four combat squadrons of aircraft assigned to the airfield, making Juvincourt one of the largest and most active USAAF fields on the continent. Attacks on German ground forces, bridges, airfields still in Luftwaffe hands, railroads and any target of opportunity of the German forces were targets of the Thunderbolts as the ground forces moved east into Luxembourg and past the Siegfried Line into Germany.[13] In addition, the Royal Air Force also utilized Juvincourt, units and aircraft are yet to be determined.



With the war ended, Juvincourt became largely a transport airfield, being used by the RAF also for repatriation of English, Australian and New Zealand prisoners of war. These transfers were made by Lancasters of No 463 and 467 Squadrons, RAAF together with 186 and 50 Squadrons RAF. (operation Exodus)



The airfield was returned to French control on 2 July 1945.