 Finally, in the beginning of June, training was completed and the squadron moved to the 1st Air Depot at Colombey-les-Belles Airdrome where the 13th Aero Squadron was classified as a Pursuit Squadron and received French SPAD XIII aircraft.Once equipped the squadron was ordered to Croix de Metz Aerodrome, near Toul, in the "Zone of Advance".There the 13th received its combat assignment to the 2d Pursuit Group where it joined the 22d, 49th and 139th Aero Squadrons.