When Maj. Gen. William H.C. Whiting left the army on medical furlough July 26, Hood became permanent division commander, and his command was reassigned to Maj. Gen James Longstreet's corps. While the division had numbered five brigades at Seven Pines, a couple of army reorganizations since then reduced it to just two—the Texas Brigade and a brigade of Mississippians commanded by Col. Evander M. Law. Also accompanying them during the Northern Virginia Campaign was the independent South Carolina brigade of Brig. Gen Nathan "Shanks" Evans, who technically had authority over Hood, his junior in rank, for the campaign. At Second Bull Run, Hood spearheaded the assault on the Union left flank that forced them to retreat from the field. Hood's two brigades lost over 1000 men in the battle, and if Evans's brigade is also counted in, the total would be near 1500 casualties.