2. Brigadier-General Franklin Pierce's Brigade.
- Ninth, Twelfth, and Fifteenth Infantry.
IV. Major-General John A. Quitman's Division.
1. Brigadier-General Shields's Brigade.
2. Lieutenant-Colonel Watson's Brigade.
- A detachment of Second Pennsylvania Volunteers.
- A detachment of United States Marines.
List of Officers of the Battalion of Marines under Command of Lieutenant-Colonel Watson.
Brevet Lieutenant-Colonel Samuel E. Watson, Major Levi Twiggs, Major William Dulany.
Staff.—First Lieutenant and Adjutant D.D. Baker, First Lieutenant and Acting Quartermaster John S. Devlin.