At the Second Battle of Bull Run, the maneuvers of General Stonewall Jackson and his teamwork with General Lee were too much for the 45,000 Union troops under General John Pope, who broke and retreated to Washington, D.C. Union lossess were 1724 killed, 8372 wounded, and 5958 missing. Confederate losses stood at 1481 killed, 7621 wounded, 89 missing.
Carruth, Gorton. "The Encyclopedia of American Facts and Dates". 10th Ed. New York: Harper Collins Publishers. ©1997.