Claim: Hilbert Leigh Bair served in tthe military in the US and the UK, fought in two wars, and  received awards in the US and UK.
Evidence: Lieutenant (later Lieutenant Colonel) Hilbert Leigh Bair began his service career as a World War I flying ace credited with six aerial victories. He was forwarded to the Royal Air Force for seasoning, and was assigned to 24 Squadron on 5 July 1918. Royal Air Force (United Kingdom)
Air Service, United States Army World War I
World War II American Distinguished Service Cross, British Distinguished Flying Cross