SIEGE OF VICKSBURG.
I NOW determined upon a regular siege -- to "outcamp the enemy," as it were, and to incur no more losses. The experience of the 22d convinced officers and men that this was best, and they went to work on the defences and approaches with a will. With the navy holding the river, the investment of Vicksburg was complete. 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 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 distinct battles (besides continuous skirmishing) had been fought and won by the Union forces; the capital of the State had fallen and its arsenals, military manufactories and everything useful for military purposes had been destroyed; an average of about one hundred and eighty miles had been marched by the troops engaged;