 During this time, he also flew a borrowed Fokker Dr.1 Triplane, though he doesn't seem to have claimed any successes with it.He became an ace on 18 June, with the first of his two June victories.On the 25th, he took his new Fokker D.VII on a test flight, came upon a dogfight between D. VIIs of another Jasta and Sopwith Camels, and shot one of the Camels down.