...tural fortification, strengthened by a year's labor of thousands of negroes, directed by educated and skilled officers. My plan was by a prompt and concentrated movement to break the center, near Chickasaw Creek , at the head of a bayou of the same name; and once in position to turn to the right (Vicksburg), or left (Drumgould's Bluff), according to information then obtained. I supposed their organized forc...