《蓝衣士兵》是一部1970年的修正主义西部片,取材于印第安人战争期间发生于美国科罗拉多州的沙溪大屠杀事件,被广泛认为是在隐喻美国在越南的战争罪行。影片讲述一名美军士兵与一位通晓印第安人文化的白人女子在大西部的遭遇。二人成为了美军屠杀印第安人事件的目击者与亲历者。After a cavalry group is massacred by the Cheyenne, only two survivors remain: Honus, a naive private devoted to his duty, and Cresta, a young woman who had lived with the Cheyenne two years and whose sympathies lie more with them than with the US government. Together, they must try to reach the cavalry's main base camp. As they travel onward, Honus is torn between his growing affection for Cresta, and his disgust for her anti-American beliefs. They reach the cavalry campsite on the eve of an attack on a Cheyenne village, where Honus will learn which side has really been telling him the truth.