Battle of Vicksburg By SKozlu11 May 19, 1863 Grant's army arrived in front of the defenses of Vicksburg Period: May 19, 1863 to Jul 4, 1863 Timeline for Battle of Vicksburg May 22, 1863 Grant planned another attack for this day Jun 25, 1863 The first mine was not successful, Union assault had been repulsed Jun 28, 1863 Pemberton had recieved an anonymous note from his men asking to surrender Jul 4, 1863 Pemberton and Confederacy surrenders