 Upon his transfer to Jagdstaffel 13, he found his niche under Rudolph Berthold, one of Germany's most dedicated soldiers.However, it was several months before he scored again, on 15 October.With the introduction of the Fokker D.VII in 1918, Büchner came into his own; he flew at least three different machines during his career, scoring three victories in June and becoming Commanding Officer of the Jasta on 15 June.