The Army of the Tennessee
Major General Ulysses S. Grant

On the 6th day of April, the Army of the Tennessee was encamped on the west bank of the Tennessee River; the First, Second, Fourth, Fifth, and Sixth Divisions at Pittsburg Landing, with 39,830 officers and men present for duty; the Third Division at Crump's Landing, with 7,564 officers and men present for duty. General Grant's headquarters was at Savannah, Tenn., where he was awaiting the arrival of General Buell. While at breakfast early Sunday morning, April 6, General Grant heard heavy firing at Pittsburg Landing, and leaving orders for General Nelson to move his division up the east bank of the river to Pittsburg, General Grant and staff repaired to the battlefield, where he arrived at about 8 a.m. He visited each of his divisions at the front and finding that the attack was by a large force of the enemy, he sent an order for his Third Division to hasten to the field and a request to General Buell for reenforcements. The Army of the Tennessee was gradually driven back until at sunset it occupied a position extending from the Landing to Snake Creek Bridge. In this position it repulsed an attack made by the Confederates at 6 o'clock p.m. General Grant passed the night in bivouac with his troops, without shelter, and early next morning, reenforced by his Third Division and by General Buell with three divisions of the Army of the Ohio, he renewed the battle, and at 4 p.m. had regained possession of the entire field.

First Division - Major General John A. McClernand

Second Division - Brigadier General W.H.L. Wallace

Third Division - Major General Lew Wallace

Fourth Division - Brigadier General Stephen A. Hurlbut

Fifth Division - Brigadier General William T. Sherman

Sixth Division - Brigadier General Benjamin Prentiss