Conference of Confederate commanders the night before the battle. From left to right, Gen. P. G. T. Beauregard, Gen. Leonidas Polk (seated), Gen. John C. Breckinridge, Gen. A. S. Johnston, Gen. Braxton Bragg, and Maj. J. F. Gilmer. Gen. W. J. Hardee was not present.
Cherry Mansion, Savannah, Tenn., used as headquarters for the Union Army, March 13 to April 29, 1862. While eating breakfast in this house, General Grant heard the sounds of heavy firing which told him the battle had begun. Generals W. H. L. Wallace and C. F. Smith died here in April 1862.
In obedience to this order, Sherman encamped his division along a ridge on either side of Shiloh Church, almost 3 miles from Pittsburg Landing, with General Hurlbut’s division about a mile to his rear. Within a few days, Gen. Benjamin M. Prentiss’ division took position on Sherman’s left, while Gen. John A. McClernand and Gen. W. H. L. Wallace formed their divisions between Sherman and the river. The 3d Division, commanded by Gen. Lew Wallace, was stationed at Crump’s Landing, about 4 miles downstream from the main encampment. Thus, by April 5, 1862, there were in the five divisions of the Army of the Tennessee at Pittsburg Landing 39,830 officers and men present for duty and 7,564 at nearby Crump’s Landing.
While this concentration of troops was in progress, General Smith received a leg injury which became so serious that he had to give up his command. General Grant was restored to duty and sent to Savannah with orders to concentrate troops and supplies, but to bring on no general engagement until a union could be made with Buell’s army, and Halleck had arrived to assume personal command of the combined forces.
General Johnston, in the meantime, was concentrating all available forces at Corinth, Miss., on the Memphis and Charleston Railroad. After this had been accomplished, he resolved to take the offensive and attack Grant’s army at Pittsburg Landing, hoping to defeat that army before it could be reinforced by General Buell. Hearing that Buell was nearing Savannah, Johnston determined to attack at once and accordingly on the 3d of April issued the order for the forward movement. He expected to give battle at daylight on April 5th, but heavy rains and bad roads made progress so slow that the last of his columns did not reach the field until late afternoon. It was then decided that the attack should be postponed until daylight the next morning. Johnston’s army, 43,968 strong, went into bivouac in order of battle within less than 2 miles of the Federal camps. The Confederate forces were formed in three lines. Gen. W. J. Hardee’s corps and one of Gen. Braxton Bragg’s brigades were in the first line, the remainder of Bragg’s corps in the second line, and Generals Leonidas Polk’s and J. C. Breckinridge’s corps in the third line.
During the night of April 5th the two hostile armies were encamped within a short distance of each other: the Confederates poised, ready to attack, while the unsuspecting Union army went about its normal camp routine, making no preparations for the defense of its position. On Saturday, a few hours before the battle, Sherman wrote Grant: “I have no doubt that nothing will occur to-day more than some picket firing,” and that he did not “apprehend anything like an attack” on his position. The same day, after Sherman’s report from the front, Grant, who was at Savannah, telegraphed Halleck: “I have scarcely the faintest idea of an attack (general one) being made upon us, but will be prepared should such a thing take place.”
The First Day
The battle began about 4:55 a. m., Sunday, April 6, when a reconnoitering party of Prentiss’ Union division encountered Hardee’s skirmish line, under Maj. Aaron B. Hardcastle, a short distance in front of Sherman’s camps. The reconnoitering party—three companies of the 25th Missouri under Maj. James E. Powell—fighting and retreating slowly toward its camps was reinforced by four companies of the 16th Wisconsin and five companies of the 21st Missouri. These troops were, in turn, reinforced at the northeast corner of Rhea Field by all of Col. Everett Peabody’s brigade. Here they succeeded in holding the Confederates in check until about 8 a. m., when they fell back to Prentiss’ line of camps, closely followed by the enemy.
General Sherman, hearing the picket firing in his front, immediately got his division under arms and posted a battery at Shiloh Church and another on the ridge to the south. The left of this hastily formed line received the full impact of the Confederate onslaught at about the same time that Prentiss’ camps were attacked. One of the regiments in the left brigade—the 53d Ohio—consisted of raw troops who had never been under fire. Unable to withstand the fierce Confederate attack, this regiment soon broke and fled to the rear. A short time later the other two regiments of the brigade did likewise. The commander of the brigade, Col. Jesse Hildebrand, refused to leave the field with his men. Since he had no troops of his own, he acted as aide for General McClernand the rest of the day.