D. Porter, would cooperate; that we could count on a full division from the troops at Helena; and he believed that, by a prompt movement, I could make a lodgment up the Yazoo and capture Vicksburg from the rear; that its garrison was small, and he, at Oxford, would so handle his troops as to hold Pemberton away from Vicksburg. I also understood that, if Pemberton should retreat south, he would follow him up, and would expect to find me at the Yazoo River, if not inside of Vicksburg.

page 69