南北战争期间，美国军队向西部地区派遣了一支志愿兵连队。随着任务方向的逐步改变，他们参与行动的初衷开始变得模糊不清。

　　A man wakes in an empty suburban house with no memory and blood smeared on his arm. As he frantically washes off the blood, he discovers that it is