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.