The 23rd Infantry Regiment, U. S. Colored Troops, was one of nine in the IX Corps, an independent corps that joined both the Army of the Potomac and the Army of the James.
Other regiments of the IX Corps were the 19th, 27th, 28th, 29th, 30th, 31st, 39th and 43rd. They were under the direction of Generals Edward Ferrero and Ambrose Burnside. Click HERE for more information.