Offizierstellvertreter Fritz Gustav August Kosmahl (1892–1917) was one of the first flying aces of Germany's Luftstreitkräfte during World War I. He was one of the few German two-seater aces of the war, being officially credited with nine aerial victories. He was also one of the first ten German aviators to earn the Royal House Order of Hohenzollern. Two days later, on 22 September 1917, Fritz Kosmahl suffered a stomach wound in combat, but managed to return to base despite his injury. He lingered four days after landing, succumbing at 0230 hours on 26 September 1917.