General Banks, with a large force, has reinforced General Butler in Louisiana, and from that quarter an expedition, by water and land, is coming northward.
General Grant, with the Thirteenth Army Corps, of which we compose the right wing, is moving southward.

The naval squadron (Admiral Porter) is operating with his gunboat fleet by water, each in perfect harmony with the other.
General Grant's left and centre were at last accounts approaching the Yalabusha, near Grenada, and the railroad to his rear, by which he drew his supplies, was reported to be seriously damaged.

This may disconcert him somewhat, but only makes more important our line of operations.

At the Yalabusha General Grant may encounter the army of General Pemberton, the same which refused him battle on the line of the Tallahatchie, which was strongly fortified; but, as he will not have time to fortify it, he will hardly stand there; and, in that event, General Grant will immediately advance down the high ridge between the Big Black and Yazoo, and will expect to meet us on the Yazoo and receive from us the supplies which he needs, and which he knows we carry along.

Parts of this general plan are to cooperate with the naval squadron in the reduction of Vicksburg; to secure possession of the land lying between the Yazoo and Big Black; and to act in concert with General Grant against Pemberton's forces, supposed to have Jackson, Mississippi, as a point of concentration.