Brian Urquhart enters the chat...
"The episode was described by Cornelius Ryan in his book on "Market Garden", A Bridge Too Far. In the film version, directed by Richard Attenborough, Urquhart's character (portrayed by Irish actor Frank Grimes) was renamed "Major Fuller", to avoid confusion with the British general Roy Urquhart, the commander of the 1st Airborne Division at Arnhem. The subsequent failure of the operation and the heavy casualties that resulted vindicated Urquhart's judgment. He became deeply depressed by his failure to persuade his superiors to halt the operation, and requested a transfer out of the airborne forces."
en.wikipedia.org