 The two of them would serve under Germany's ace of aces, Manfred von Richthofen, who would be appointed to command the newly formed JG II on 26 July.Von Boenigk scored his first aerial victory on 20 July 1917.By 9 September, when he scored his fifth and final victory for Jasta 4, he was an ace, even without credit for two unconfirmed claims.