German fighter triplane Fokker Dr 1 (1917), the airplane of Baron Manfred von Richthofen (1892-1918), an ace among German fighter pilots, during an air show. © Jacques Cuinières / Roger-Viollet
German fighter triplane Fokker Dr 1 (1917), the airplane of Baron Manfred von Richthofen (1892-1918), an ace among German fighter pilots, during an air show. © Jacques Cuinières / Roger-Viollet

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