After returning home from service in the Second World War, he was sent to China as Winston Churchill's personal representative. While en route he attended the Cairo Conference.
Carton de Wiart was thought to be a model for the character of Brigadier Ben Ritchie Hook in Evelyn Waugh's trilogy Sword of Honor. The Oxford Dictionary of National Biography described him thus: "With his black eye patch and empty sleeve, Carton de Wiart looked like an elegant pirate, and became a figure of legend."
"Governments may think and say as they like, but force cannot be eliminated, and it is the only real and unanswerable power. We are told that the pen is mightier than the sword, but I know which of these weapons I would choose."
"Frankly I had enjoyed the war...and why do people want peace if the war is so much fun."