The House with Closed Shutters.

During the Civil War a young soldier loses his nerve in battle and runs away to his home to hide; his sister puts on his uniform, takes her brother's place in the battle, and is killed. Their mother, not wanting the shameful truth to become known, closes all the shutters (hence the film's title) and keeps her son's presence a secret for many years, though two boyhood chums stumble upon the truth...