Merry Christmas Mr. Lawrence (1983) on Netflix

In 1942, in Java, the British Major Jack 'Strafer' Celliers arrives in the Japanese POW camp and is submitted to a Japanese court to examine his surrender. He explains that the Japanese soldiers would murder the local villagers and he decided to surrender to avoid the massacre. The camp commander Captain Yonoi feels a sort of fascination for Jack and sends him to the infirmary to be treated. The liaison of the prisoners with Yonoi and Sergeant Gengo Hara, Colonel John Lawrence, has lived in Japan for many years and can understand both cultures and their leader is Captain Hicksley. When the rebel Jack leaves the infirmary, he challenges Yonoi, who is a man that follows the principles of honor and discipline. Yonoi believes that Jack is possessed by demons and their confrontation will lead the British to a tragic end.