Jackson executed a sweeping flanking maneuver that captured Pope's main supply depot. He placed his corps in the rear of Pope's army, but he then took up a defensive position and effectively invited Pope to assault him. On August 28 and 29, the start of the Second Battle of Bull Run (Second Manassas), Pope pounded Jackson as Longstreet and the remainder of the army marched from the west, through Thoroughfare Gap, to reach the battlefield. On the afternoon of the 28th, Longstreet engaged a 5,000-man federal division under James B. Ricketts at the Battle of Thoroughfare Gap. Ricketts had been ordered to delay Longstreet's march towards the main Confederate army, but he took up his position too late, allowing George T. Anderson's brigade to occupy the high ground. Lee and Longstreet watched the battle together and decided to flank the Union position. Hood's division and a brigade under Henry L. Benning advanced towards the gap from the north and the south, respectively, while Wilcox's division followed in a six-mile march northward. Ricketts realized his position was untenable and withdrew that evening, allowing Longstreet to join up with the rest of Lee's army. Postwar criticism of Longstreet claimed that he marched his men too slowly, leaving Jackson to bear the brunt of the fighting for two days, but they covered roughly in a little over 24 hours and Lee did not attempt to get his army concentrated any faster.