[4] On 11 February 1943, Dhenin was commissioned into the Medical Branch of the Royal Air Force Volunteer Reserve as a flying officer (emergency).
[1][3] On 1 September 1945, after the end of the Second World War, Dhenin transferred to the Medical Branch of the Royal Air Force as a flight lieutenant.
[9] On 14 January 1944, Dhenin was awarded the George Medal (GM), the second highest civil decoration of the UK, for rescuing an airman from a crashed and burning bomber.
[7] In the 1954 New Year Honours, he was awarded an Air Force Cross (AFC) for flying a plane into the mushroom cloud of the first British nuclear bomb test in Australia in 1953.
Although fully aware that the heat might cause the bomb to detonate at any moment Flying Officer Dhenin worked for over half an hour to relieve the injured airman's pain and, assisted by Corporal Lush, endeavoured to release him.
Flying Officer Dhenin and Corporal Lush showed fine courage and determination in circumstances of great danger.Dhenin married Evelyn in 1946.