who was was in both the Battle of Chancellorsville and the Seven Days Battles?
Battle of Chancellorsville:  The campaign pitted Union Army Maj. Gen. Joseph Hooker's Army of the Potomac against an army less than half its size, General Robert E. Lee's Confederate Army of Northern Virginia. Seven Days Battles:  Confederate General Robert E. Lee drove the invading Union Army of the Potomac, commanded by Maj. Gen. George B. McClellan, away from Richmond and into a retreat down the Virginia Peninsula.
General Robert E. Lee