- Second World War (1939-1945)
- Temporary Lieutenant-Colonel
- Assistant director, Army Film Unit, War Office, British Government
- Awarded on:
- March 14th, 1947
"Lt. Col Ambler achieved an outstanding success in the promotion of the highest type of relationship between the Armed Forces of Great Britain and the United States. This was accomplished by the painstaking and extremely arduous task of preparing an outstanding motion picture entitled "UNITED STATES" and through his efforts incalculable benefits have occurred to the Armed Forces of the United States."