Paulsen, Gary. Soldier's Heart. New York : Delacorte, 1998.
Charley Goddard, a 15-year-old Minnesota recruit, travels east in 1861 and serves in the campaigns of the Army of the Potomac from First Manassas to Gettysburg.
The title refers to a 19th-century term for a condition now known as post-traumatic stress. A spare, short book based on historical characters and incidents, written with great energy and vividness.