 Complete the following phrase:  During the Northern Virginia Campaign, Rooney played a leading role in Stuarts well-crafted attack on General John Popes supply base at Catletts Station on August 22, 1862, capturing a paymasters safe full of Yankee greenbacks. His cavalry regiment was assigned to the brigade of Brig. Gen. Fitzhugh Lee, his cousin, for the Maryland Campaign. Following the Battle of South Mountain, Lee was knocked unconscious after a horse fell from under him, and was unable to participate in the 