A civil engineer from Norfolk, Virginia, Clive Wilson Warman enlisted in the Princess Patricia's Canadian Light Infantry at Valcartier, Canada on 5 September 1914. With this regiment he was wounded in action in the Second Battle of Ypres in April 1915. After recovering from his wounds, Warman was assigned to a mechanical transport unit and served in Ireland during the Easter Rebellion. In the summer of 1916 he transferred to the Royal Flying Corps and after training he served as an instructor at Turnberry. He was sent to France on 13 June 1917 and joined 23 Squadron three days later. On 16 August 1917, flying a SPAD VII, Warman shot down a two-seater and a balloon before engaging three German scouts. When his machine gun jammed and couldn't be cleared, he threw his gun mallet at his opponents and resumed the fight with his flare pistol. For his actions, Warman was awarded the Distinguished Service Order (DSO). He was the only American to receive this award during World War I. While serving with the Royal Canadian Air Force, Warman died from injuries sustained in a crash over the Edmonton sewage farm on 8 May 1919.
2nd Lt. Clive Wilson Warman, M.C., Gen. List and R.F.C.
For conspicuous gallantry and devotion to duty. During two days, whilst operating under very difficult conditions in high wind and against strong hostile opposition, he destroyed three enemy machines and a balloon. He displayed the greatest dash and fearlessness in attacking an enemy aerodrome, and on one occasion, when separated from his patrol, and surrounded by 20 hostile machines, he fought his way through, although his machine gun was useless, by attacking them with his "Very" pistol; eventually regaining his own aerodrome with his machine much shot about. His wonderful coolness and courage have on all occasions been beyond praise.
T./2nd Lt. Clive Wilson Warman, Gen. List and R.F.C.
For conspicuous gallantry and devotion to duty. He has on all occasions proved himself to be an exceptionally skilful and gallant pilot, having in the space of six weeks brought down six machines and destroyed a hostile balloon. He has also driven down at least five other enemy machines, displaying a consistent determination to attack at close range regardless of personal danger.