Meyrick Edward Clifton James was an actor and soldier, with a resemblance to Field Marshal Bernard Montgomery which was used by British intelligence as part of a deception campaign during the Second World War.
Clifton James posing as General Montgomery
Lt. Clifton James
James David Graham Niven was a British actor, soldier, memoirist, and novelist. Niven was known as a handsome and debonair leading man in Classic Hollywood films. He received an Academy Award and a Golden Globe Award.
Niven in the film Enchantment (1948)
With Loretta Young in Eternally Yours (1939)
With Leslie Howard in The First of the Few (1942)
Niven in 1949