Empire of the Sun (1987) on Netflix

An aristocratic British youth is seperated from his family at the start of World War II after the Japanese Army invades British controlled areas of China. Reduced to living on the street and fighting for food, the youth is eventually interned in a Japanese POW camp for British civilians. Here, admiration quickly develops both for captured American pilots and the Japanese themselves. When the war ends, the boy torn from everything he knew attempts to again find his parents.