Henry O. Nightingale, c. 1864, age 20. Born in England, Nightingale emigrated to America when he was five and joined the Union Army in 1861 at the age of seventeen. He was promoted to corporal after the Battle of Gettysburg. This picture was taken before he was wounded at the Battle of the Wilderness in 1864 and his left arm was partially amputated. He was also present at Ford’s Theatre when Abraham Lincoln was assassinated in 1865.