In his first dogfight on May 7, 1917, his flight commander,Albert Ball, was shot down while Rhys Davids survived an attack byKurt Wolff of Jasta 11. On September 23, 1917, during one of the most famous dogfights of the war, he shot down the Fokker Triplane ofWerner Voss. WhenCarl Menckhoffarrived on the scene in an Albatros Scout and attempted to assist Voss, Rhys Davids shot him down too. The following month, Rhys Davids was shot down byKarl Gallwitz of Jasta Boelcke.