...e Vicksburg to be 25,000 men.--Now let us see what his reinforcements amount to. We know that they have stripped the Western Department, taking away the troops that garrisoned Columbus, Island No.10, Jackson, Tenn. , Bolivar and Corinth, (leaving but a small guard at those places,) amounting to about 5,000. Memphis contains at this time about 2,000 troops, consisting of fragments of regiments negroes and white...