Major Henry Livermore Abbott of the 20th Massachusetts Volunteer Infantry was the most widely known and highly respected officer of his rank to serve in the Army of the Potomac. He distinguished himself in every battle in which he participated, from Ball's Bluff until the Battle of the Wilderness, where he died in command of his regiment. Fallen Leaves is a collection of Abbott's wartime letters to his family and friends, the majority published here for the first time. Robert Garth Scott's introduction contains a biographical sketch of Abbott that offers the most complete account of his life...