It looks like an American serviceman with the Fokker. Fokker DVII 2113/18 is not listed as one that was handed over at Coblenz in January 1919. The background does not correspond to Coblenz fascinating image REF: Flying for Kaiser Wilhelm Aces Aeroplanes and defeat
When you do the research into him he was quite an enlightened man. His birth was awkward which affected him all his life, some authorities say that the heavy use of sedatives on his mother was another reason for his strangeg thinking. Totally misjudged the Entente forces and made the wrong...
Many thanks I've done the research and its published, I found more material of jet engines in a BIOS/FIAT/CIOS series of reports. There's a lot of stuff in Aeroplane, Flight and Aircraft Engineer for 1945 and 46. The best one found was in the year 1946 for Aeroplane Spotter. All text are...
Leutnant Hartmuth Baldamus (10 August 1891 – 14 April 1917) flying ace credited with 18 aerial victories. He flew a two-seater reconnaissance aircraft for Feldflieger Abteilung 20, beginning 29 March 1915. Posted to fly fighters with Jagdstaffel 5 and moved on to Jagdstaffel 9 in early November...
Passed to the United States at Coblenz in 1 January 1919, Engine was Mercedes 41152, fully armed with a full set of instruments. Image restored in Flying for Kiser Wilhelm 1914 - 1918.