the arrival at the end of the day of union reinforcements under pope, as well as the rest of jackson's men, resulted in a two-day stand-off there, with the confederates finally withdrawing from cedar mountain on august 11. stonewall jackson observed that banks's men fought well, and lincoln also expressed confidence in his leadership. during the second battle of bull run, banks was stationed with his corps at bristoe station and did not participate in the battle. afterwards, the corps was integrated into the army of the potomac as the xii corps and marched north with the main army during the confederate invasion of maryland. on september 12, banks was abruptly relieved of command.