After flying training, Barnard was appointed Flying Officer in the
Royal Flying Corps, and in July 1916 he joined
No. 18 Squadron in France. On 22 October 1916, 2nd Lt Barnard was piloting
FE.2b (No. 4929) from
Laviéville with his observer Lt F.S. Rankin. Rankin was hit by bullets from an attacking aircraft, and Barnard prevented Rankin from falling overboard, then made an emergency landing. Rankin died, and Barnard received injuries that made him unfit for service for a further year. Barnard was awarded the AFC (
Air Force Cross). In late 1918, he served with
No. 24 Squadron RAF, flying VIPs and other personnel on communications flights in UK and France. ==Instone Air Line==