 Major Carl Spaatz, although on orders to return home, sought and received permission to serve with the 13th Aero Squadron as a pursuit pilot.He subordinated himself to men of lower rank, but as a result of his ardent zeal and ability, he was soon a flight leader and was credited with destroying two Fokkers during the St. Mihiel and Meuse-Argonne Offensive.and is also credited with an out of control enemy aircraft

After the armistice, the squadron remained at Souilly until 16 December 1918 when orders were received from First Army for the squadron to report to the 1st Air Depot, Colombey-les-Belles Airdrome to turn in all of its supplies and equipment and was relieved from duty with the AEF.