One of seven infantry corps in the Army of the Potomac.

Commander: Maj. Gen. Henry W. Slocum (September 24, 1827 – April 14, 1894). USMA 1852. Left the army to become a lawyer. Later commanded the Army of Georgia under Sherman. Post-War U.S. Congressman from New York.

Strength: 9,788

Losses: 1,082; 204 killed, 812 wounded, 66 missing.

Monuments and Memorials of the Twelfth Corps