Come and See (1985)

Elem Klimov's Come and See is the most harrowing war film ever made—its protagonist ages visibly before the camera as Nazi atrocities unfold in Belarus. Genocide is depicted with such unflinching realism that it makes Saving Private Ryan #3 look like a recruitment video by comparison. The film's 66-minute concentration camp sequence uses real archival footage and cost 35% of its budget on special effects smoke. A concrete data point: the lead actor lost 28 pounds during production.