The Winston Affair

In WW2, a US lieutenant stationed in India shoots dead a British NCO and admits his crime but his reason for the murder is so bizarre that it puzzles his defense counsel.

The Winston Affair is a 1964 drama war movie directed by Guy Hamilton, starring Robert Mitchum, Trevor Howard, France Nuyen. It holds an IMDb rating of 6.6/10 from 1,130 votes and runs 1h 34m.