HEADQUARTERS DEPARTMENT OF THE TENNESSEE
BEFORE VICKSBURG, March 16, 1863

Major-General W. T. SHERMAN, commanding Fifteenth Army Corps.

GENERAL: You will proceed as early as practicable up Steele's Bayou, and through Black Bayou to Deer Creek, and thence with the gunboats now there by any route they may take to get into the Yazoo River, for the purpose of determining the feasibility of getting an army through that route to the east bank of that river, and at a point from which they can act advantageously against Vicksburg.

Make such details from your army corps as may be required to clear out the channel of the various bayous through which transports would have to ran, and to hold such points as in your judgment should be occupied.

I place at your disposal to-day the steamers Diligent and Silver Wave, the only two suitable for the present navigation of this route. Others will be supplied you as fast as required, and they can be got.

I have given directions (and you may repeat them) that the party going on board the steamer Diligent push on until they reach Black Bayou, only stopping sufficiently long at any point before reaching there to remove such obstructions as prevent their own progress. Captain Kossak, of the Engineers, will go with this party. The other boat-load will commence their work in Steele's Bayou, and make the navigation as free as possible all the way through.

There is but little work to be done in Steele's Bayou, except for about five miles abort midway of the bayou. In this portion many overhanging trees will have to be removed, and should be dragged out of the channel.

Very respectfully,

U. S. GRANT, Major-General.

On returning to my camp at Young's Point, I started these two boats up the Yazoo and Steele's Bayou, with the Eighth Missouri and some pioneers, with axes, saws, and all the tools necessary. I gave orders for a part of Stuart's division to proceed in the large boats up the Mississippi River to a point at Gwin's plantation, where a bend of Steele's Bayou neared the main river; and the next day, with one or two stag-officers and orderlies, got a navy-tug, and hurried up to overtake Admiral Porter. About sixty miles up Steele's Bayou we came to the gunboat Price, Lieutenant Woodworth, United States Navy; commanding, and then turned into Black Bayou, a narrow, crooked channel, obstructed by overhanging oaks, and filled with cypress and cotton-wood trees. The gunboats had forced their way through, pushing aside trees a foot in diameter. In about four miles we overtook the gunboat fleet just as it was emerging into Deer Creek. Along Deer Creek the alluvium was higher, and there was a large cotton-plantation belonging to a Mr. Hill, who was absent, and the negroes were in charge of the place. Here I overtook Admiral Porter, and accompanied him a couple of miles up Deer Creek, which was much wider and more free of trees, with plantations on both sides at intervals. Admiral Porter thought he had passed the worst, and that he would be able to reach the Rolling Fork and Sunflower. He requested me to return and use all possible means to clear out Black Bayou. I returned to Hill's plantation, which was soon reached by Major Coleman, with a part of the Eighth Missouri; the bulk of the regiment and the pioneers had been distributed along the bayous, and set to work under the general supervision of Captain Kosaak. The Diligent and Silver Wave then returned to twin's plantation and brought up Brigadier-General Giles A. Smith, with the Sixth Missouri, and part of the One Hundred and Sixteenth Illinois. Admiral Porter was then working up Deer Creek with his iron-clads, but he had left me a tug, which enabled me to reconnoitre the country, which was all under water except the narrow strip along Deer Creek. During the 19th I heard the heavy navy-guns booming more frequently than seemed consistent with mere guerrilla operations; and that night I got a message from Porter, written on tissue-paper, brought me through the swamp by a negro, who had it concealed in a piece of tobacco.