Winter Soldier is a documentary which one experiences, instead of simply viewing. Over three days in January and February 1971, just a couple months before Lieutenant William Calley would be sentenced to life in prison for the My Lai Massacre (he would eventually serve less than four years), a group of Vietnam War veterans convened at a Howard Johnson in Detroit to testify about the atrocities they had witnessed or partaken in while serving in Vietnam. The conference was titled “The Winter Soldier Investigation,” after Thomas Paine: “These are the times that try men’s souls. The summertime soldier and the...