In 1916, Aue served with Kampstaffel 30 of Kampgeschwader 5. Flying a two-seater reconnaissance plane, Aue and his observer managed to down a similar craft, a
Royal Aircraft Factory BE.2c, on 25 October 1916. Aue was then credited with two more victories before being transferred to Jasta 10 that same month. He scored his—and his new squadron's—first victory on 25 March 1917. Aue was
wounded in action on 19 September 1917 while piloting a
Pfalz D.III. During a dogfight at 3,000 meters with two dozen British
Royal Naval Air Service planes from Naval 10 Squadron above
Roulers, France the German sergeant ace was hit by three English bullets, one of them an explosive round. Though he refused to leave his unit, his wounds kept him out of action until February 1918; It would be his last victory while flying the Pfalz, as Jasta 10 was upgrading to
Fokker D.VIIs. On 16 June 1918, Aue attacked and destroyed an enemy observation balloon for his seventh confirmed win. He went on to shoot down three more enemy fighter planes, his last victory coming on 4 September 1918. ==Between the wars==