As near as I can learn, there are five regiments of rebel infantry at Purdy; at Corinth, and distributed along the railroad to Inca, are probably thirty thousand men; but my information from prisoners is very indistinct. Every road and path is occupied by the enemy's cavalry, whose orders seem to be to fire a volley, retire again, fire and retire. The force on the Purdy road attacked and driven by Major Bowman yesterday, was about sixty strong. That encountered last night on the Corinth road was about five companies of Tennessee cavalry, sent from Purdy about 2 p.m. yesterday.

I hear there is a force of two regiments on Pea Ridge, at the point where the Purdy and Corinth roads come together.

I am satisfied we cannot reach the Memphis & Charleston road without a considerable engagement, which is prohibited by General Halleck's instructions, so that I will be governed by your orders of yesterday, to occupy Pittsburg strongly, extend the pickets so as to include a semicircle of three miles, and push a strong reconnoissance as far out as Lick Creek and Pea Ridge.

I will send down a good many boats to-day, to be employed as you may direct; and would be obliged if you would send a couple of thousand sacks of corn, as much hay as you can possibly spare, and, if possible, a barge of coal.

I will send a steamboat under care of the gunboat, to collect corn from cribs on the river-bank.

I have the honor to be your obedient servant,

W. T. SHERMAN, Brigadier-General, commanding First Division.

HEADQUARTERS, STEAMBOAT CONTINENTAL, Pittsburg, March 18, 1882.

Captain RAWLINS, a.s.sistant Adjutant-General to General GRANT.

SIR: The division surgeon having placed some one hundred or more sick on board the f.a.n.n.y Bullitt, I have permitted her to take them to Savannah. There is neither house nor building of any kind that can be used for a hospital here.

I hope to receive an order to establish floating hospitals, but in the mean time, by the advise of the surgeon, allow these sick men to leave. Let me hope that it will meet your approbation.

The order for debarkation came while General Sherman was absent with three brigades, and no men are left to move the effects of these brigades.

The landing, too, is small, with scarcely any chance to increase it; therefore there is a great acc.u.mulation of boats. Colonel McArthur has arrived, and is now cutting a landing for himself.

General Sherman will return this evening. I am obliged to transgress, and write myself in the mean time,

Respectfully your obedient servant,

J. H. HAMMOND, a.s.sistant Adjutant-General.

P. S-4 p.m.-Just back; have been half-way to Corinth and to Purdy. All right. Have just read this letter, and approve all but floating hospitals; regimental surgeons can take care of all sick, except chronic cases, which can always be sent down to Paducah.

Magnificent plain for camping and drilling, and a military point of great strength. The enemy has felt us twice, at great loss and demoralization; will report at length this evening; am now much worn out.

W. T. SHERMAN, Brigadier-General.

HEADQUARTERS FIRST DIVISION Pittsburg Landing, March 19, 1862.

Captain RAWLINS, a.s.sistant Adjutant-General to General GRANT, Savannah, Tennessee.

SIR: I have just returned from an extensive reconnoissance toward Corinth and Purdy, and am strongly impressed with the importance of this position, both for its land advantages and its strategic position. The ground itself admits of easy defense by a small command, and yet affords admirable camping-ground for a hundred thousand men. I will as soon as possible make or cause to be made a topographical sketch of the position. The only drawback is that, at this stage of water, the s.p.a.ce for landing is contracted too much for the immense fleet now here discharging.

I will push the loading and unloading of boats, but suggest that you send at once (Captain Dodd, if possible) the best quartermaster you can, that he may control and organize this whole matter. I have a good commissary, and will keep as few provisions afloat as possible. Yours, etc.,

W. T. SHERMAN, Brigadier-General commanding.

HEADQUARTERS SHERMAN'S DIVISION Camp Shiloh, near Pittsburg Landing, Tennessee, April 2, 1862

Captain J. A. RAWLINS, a.s.sistant Adjutant-General to General GRANT.

SIR: In obedience to General Grant's instructions of March 31st, with one section of Captain Muench's Minnesota Battery, two twelve-pound howitzers, a detachment of Fifth Ohio Cavalry of one hundred and fifty men, under Major Ricker, and two battalions of infantry from the Fifty-seventh and Seventy-seventh Ohio, under the command of Colonels Hildebrand and Mungen, I marched to the river, and embarked on the steamers Empress and Tec.u.mseh. The gunboat Cairo did not arrive at Pittsburg, until after midnight, and at 6 p.m. Captain Bryant, commanding the gunboat, notified me that he was ready to proceed up the river. I followed, keeping the transports within about three hundred yards of the gunboat. About 1 p.m., the Cairo commenced sh.e.l.ling the battery above the mouth of Indian Creek, but elicited no reply. She proceeded up the river steadily and cautiously, followed close by the Tyler and Lexington, all throwing sh.e.l.ls at the points where, on former visits of the gunboats, enemy's batteries were found. In this order all followed, till it was demonstrated that all the enemy's batteries, including that at Chickasaw, were abandoned.

I ordered the battalion of infantry under Colonel Hildebrand to disembark at Eastport, and with the other battalion proceeded to Chickasaw and landed. The battery at this point had evidently been abandoned some time, and consisted of the remains of an old Indian mound, partly washed away by the river, which had been fashioned into a two-gun battery, with a small magazine. The ground to its rear had evidently been overflowed during the late freshet, and led to the removal of the guns to Eastport, where the batteries were on high, elevated ground, accessible at all seasons from the country to the rear.

Upon personal inspection, I attach little importance to Chickasaw as a military position. The people, who had fled during the approach of the gunboats, returned to the village, and said the place had been occupied by one Tennessee regiment and a battery of artillery from Pensacola. After remaining at Chickasaw some hours, all the boats dropped back to Eastport, not more than a mile below, and landed there. Eastport Landing during the late freshet must have been about twelve feet under water, but at the present stage the landing is the best I have seen on the Tennessee River.

The levee is clear of trees or snags, and a hundred boats could land there without confusion.

The soil is of sand and gravel, and very firm. The road back is hard, and at a distance of about four hundred yards from the water begin the gravel hills of the country. The infantry scouts sent out by Colonel Hildebrand found the enemy's cavalry mounted, and watching the Inca road, about two miles back of Eastport. The distance to Inca is only eight miles, and Inca is the nearest point and has the best road by which the Charleston & Memphis Railroad can be reached. I could obtain no certain information as to the strength of the enemy there, but am satisfied that it would have been folly to have attempted it with my command. Our object being to dislodge the enemy from the batteries recently erected near Eastport, and this being attained, I have returned, and report the river to be clear to and beyond Chickasaw.

I have the honor to be, your obedient servant,

W. T. SHERMAN, Brigadier-General commanding Division.

HEADQUARTERS FIFTH DIVISION CAMP SHILOH, April 5, 1862.

Captain J. A. RAWLINS, a.s.sistant Adjutant-General, District of Western Tennessee.

SIR: I have the honor to report that yesterday, about 3 p.m., the lieutenant commanding and seven men of the advance pickets imprudently advanced from their posts and were captured. I ordered Major Ricker, of the Fifth Ohio Cavalry, to proceed rapidly to the picket-station, ascertain the truth, and act according to circ.u.mstances. He reached the station, found the pickets had been captured as reported, and that a company of infantry sent by the brigade commander had gone forward in pursuit of some cavalry. He rapidly advanced some two miles, and found them engaged, charged the enemy, and drove them along the Ridge road, till he met and received three discharges of artillery, when he very properly wheeled under cover, and returned till he met me.

As soon as I heard artillery, I advanced with two regiments of infantry, and took position, and remained until the scattered companies of infantry and cavalry had returned. This was after night.

I infer that the enemy is in some considerable force at Pea Ridge, that yesterday morning they crossed a brigade of two regiments of infantry, one regiment of cavalry, and one battery of field-artillery, to the ridge on which the Corinth road lies. They halted the infantry and artillery at a point abort five miles in my front, sent a detachment to the lane of General Meeks, on the north of Owl Creek, and the cavalry down toward our camp. This cavalry captured a part of our advance pickets, and afterward engaged the two companies of Colonel Buckland's regiment, as described by him in his report herewith inclosed. Our cavalry drove them back upon their artillery and Infantry, killing many, and bringing off ten prisoners, all of the First Alabama Cavalry, whom I send to you.

We lost of the pickets one first-lieutenant and seven men of the Ohio Seventieth Infantry (list inclosed); one major, one lieutenant, and one private of the Seventy-second Ohio, taken prisoners; eight privates wounded (names in full, embraced in report of Colonel Buckland, inclosed herewith).

We took ten prisoners, and left two rebels wounded and many killed on the field.

I have the honor to be, your obedient servant,

W. T. SHERMAN, Brigadier-General, commanding Division.

HEADQUARTERS FIFTH DIVISION Camp Shiloh, April 10, 1862.

Captain J. A. RAWLINS, a.s.sistant Adjutant-General to General GRANT.