...uickly back to him after the battle at cold Harbor (q. v.), and directed him to co-operate with the Army of the Potomac in an attempt to capture Petersburg. On June 10 Butler sent 10,500 men, under Gillmore , and 1,500 cavalry, under Kautz, to attack the Confederates at Petersburg; at the same time two gunboats went up the Appomattox to bombard an earthwork a little below the city. The troops crossed t...