 Complete the following phrase:   Transported with his regiment to Bladensburg, Maryland on September 12, he was equipped with a sabre and pistol, put through basic training and then assigned, with his regiment, to duties related to the defense of Washington, D.C. until March 10, 1862 when the 6th U.S. Cavalry was moved, by way of Fairfax Court House, Centreville, Manassas, Bull Run, and Alexandria, Virginia, to Fortress Monroe. Attached to the Army of the Potomac, the 6th U.S. Cavalrymen were then assigned to the Peninsula Campaign. After fighting in the Battle of Williamsburg May 5, they participated in the Siege of Yorktown and other interactions with the enemy during the spring and early summer of 1862, including operations at Mechanicsville May 24 and the 