This article is from the U.S. Civil War FAQ, by Justin M. Sanders email@example.com with numerous contributions by others.
Bruce Catton. Civil War, 3 volumes.
Published separately as Mr. Lincoln's Army, Glory Road, and A
Stillness at Appomattox. The history of the Army of the Potomac from First
Bull Run to the final surrender.
Thomas Connelly, Army of the Heartland.
History of the Confederate Army of Tennessee from 1861 to late 1862.
Thomas Connally, Autumn of Glory.
History of the Army of Tennessee from 1862 to 1865.
Rice Bull, The Civil War Diary of Rice Bull.
The personal reminiscences of one of Sherman's bummers who marched
Joshua L. Chamberlain, The Passing of the Armies.
Contains two equal parts: a history of the Appomattox campaign and of
the Grand Review of the Army of the Potomac in Washington, by a man who
was a major general commanding a division in the V corps, who received the
official Confederate surrender at Appomattox.
William C Davis, The Orphan Brigade.
A unit history of the Kentucky brigade of the Confederate Army of
Tennessee. Particularly poignant in describing the emotions of men whose
states, and often families, were fighting on the other side of the firing
Alan Nolan, The Iron Brigade. 1975.
A unit history of the brigade composed of the 2nd, 6th, and 7th
Wisconsin and the 19th Indiana, later the 24th Michigan, probably the best
brigade in the Army of the Potomac.
Elisha Hunt Rhodes, All For The Union. 1985.
The diary and letters of Colonel EH Rhodes, Second Rhode Island
Volunteers. Rhodes enlisted as a private and worked his up through the
ranks, reaching Colonel of the regiment in 1865. His firsthand impressions
of the war in the East.
Sam Watkins, Company "Aytch". 1885 or so.
Reminiscences of Sam Watkins, private in Company H of the First
Tennessee Volunteer Infantry. Very down to earth story of what it was like
to be a Confederate private. Does not discuss military history or issues
at all - purely one soldier's impression of the war.