Vicksburg By ktchisholm Period: Jun 1, 1862 to Jul 10, 1863 Vicksburg Campaign Aug 31, 1862 By summer's end, Vicksburg the last Confederate fort on Mississippi May 1, 1863 Grant's Army crosses river to begin city encirclement May 19, 1863 First attack from the rear fails May 24, 1863 2nd attack fails May 25, 1863 Siege begins Jul 4, 1863 Vicksburg falls