Ian Henry David Henderson was the son of Lieutenant General Sir David Henderson, commanding officer of the Royal Flying Corps. Serving with the Argyll and Sutherland Highlanders, Henderson transferred to the RFC and was posted to 19 Squadron in 1916. Flying the B.E.12, he scored his first two victories in August. In November, he scored his third victory flying the SPAD VII and was reassigned to 56 Squadron in 1917. That year, Albert Ball was killed in action and Henderson represented his father at the memorial services. Flying the S.E.5a, Henderson scored his final victories in July 1917, shooting down four Albatros D.Vs. Returning to England, he and English ace Harold Redler were killed in a D.H.9 (D1018) crash the following year.