While I was engaged at Chickasaw Bayou, Admiral Porter was equally busy in the Yazoo River, threatening the enemy's batteries at Haines's and Snyder's Bluffs above.

In a sharp engagement he lost one of his best officers, in the person of Captain Gwin, United States Navy, who, though on board an ironclad, insisted on keeping his post on deck, where he was struck in the breast by a round shot, which carried away the muscle, and contused the lung within, from which he died a few days after.

We of the army deplored his loss quite as much as his fellows of the navy, for he had been intimately associated with us in our previous operations on the Tennessee River, at Shiloh and above, and we had come to regard him as one of us.
On the 4th of January, 1863, our fleet of transports was collected at Milliken's Bend, about ten miles above the mouth of the Yazoo, Admiral Porter remaining with his gunboats at the Yazoo.

General John A.McClernand was in chief command, General George W.Morgan commanded the First Corps and I the Second Corps of the Army of the Mississippi.
I had learned that a small steamboat, the Blue Wing, with a mail, towing coal-barges and loaded with ammunition, had left Memphis for the Yazoo, about the 20th of December, had been captured by a rebel boat which had come out of the Arkansas River, and had been carried up that river to Fort Hind.
We had reports from this fort, usually called the "Post of Arkansas," about forty miles above the mouth, that it was held by about five thousand rebels, was an inclosed work, commanding the passage of the river, but supposed to be easy of capture from the rear.

At that time I don't think General McClernand had any definite views or plays of action.