The Eastern Iron Brigade consisted of the 22nd New York, 24th New York, 30th New York, 14th Regiment (New York State Militia), and 2nd U.S. Sharpshooters. During the Fredericksburg Expeditions, the brigade had two cavalry regiments attached to it, including the 2nd New York Cavalry Regiment "Harris Light" under the command of Lt. Col. Judson Kilpatrick (originally of 5th New York Zouaves) and the Sixth New York Cavalry. The pair of cavalry regiments were later sent back to their normal divisions.