Complex sentence: Thayre first flew operationally with No.16 Squadron RFC in France, in B.E.2 two-seater aircraft, gaining his first victory on 18 March 1916 when his observer, Lieutenant C. R. Davidson, shot down an attacking German Fokker E.III fighter aircraft.
Split into simpler sentences: Thayre first flew operationally with No.16 Squadron RFC (Royal Flying Corps) in France, in BE2 aircraft. In this two-seater aircraft, his first victory was achieved on 18 March 1916 when his observer, Lieutenant C. R. Davidson, shot down an attacking German Fokker E.III fighter aircraft.