... As long as we could hold our position the enemy was limited in supplies of food, men and munitions of war to what they had on hand. These could not last always. The crossing of the troops at Bruinsburg commenced April 30th. On the 18th of May the army was in rear of Vicksburg. On the 19th, just twenty days after the crossing, the city was completely invested and an assault had been made: five d...