It was reported to us that, following the battle of Fort Donelson, General Halleck, the commander of the Department of the Mississippi, and General Grant, acting under him, were not in harmony, and that Halleck had suspended Grant and placed Gen. C. F. Smith in active command of the army, and that he had established camps at Pittsburg Landing preparatory to the expected movement against Johnston’s line. It came to light later that, a few days prior to the battle of Shiloh, General Smith, in stepping into a launch from a steamboat, had sprained his ankle and was disabled, which resulted in General Grant being again placed in command. It was a current report that General Smith, after being disabled, had gone on a visit to General Halleck at St. Louis, and that General Sherman had been left in temporary command of the encampment at Pittsburg Landing. When the battle opened, General Grant was at the W. H. Cherry residence, at Savannah, Tenn., eight miles from the battlefield. General Johnston had been informed that Buell’s army was marching from Middle Tennessee to join Grant’s army at Pittsburg Landing, thus giving the Union force a numerical superiority of approximately thirty thousand men; and as it was not possible for Van Dorn to reach Corinth before the arrival of Buell, General Johnston decided to make a surprise attack on the encampment at Pittsburg Landing. Hence, on April 1, we began preparation for a forward movement. I was detailed as a courier at Beauregard’s headquarters; and as I knew the country around Corinth, I had been used in many cases in piloting the incoming troops to the encampment and in carrying messages between the different commanders. In this way I became acquainted with the contemplated movement of our army. I was not aware of the destination, but could see the feverish preparation for a move of some kind. It was General Johnston’s plan to have all of his troops before the Federal Army on the 4th of April and to fight the battle on the 5th; but the bad condition of the roads, resulting from long-continued rains, so delayed the progress of the troops that the hindmost corps did not get into position until about dark on the evening of April 5. General Johnston had instructed his commanders to guard the secret of our approach. Late in the afternoon of the 5th, while we were waiting for the final touches of the attacking formation, I rode out to a high point in front of our center, and I could hear the Union troops drilling in their encampment. The drum and fife and the commands of the officers could be plainly heard. It will be remembered that certain Federal commanders always claimed that their troops were not surprised at Shiloh, but I shall always believe that the Union Army was absolutely unaware of the presence of the Confederate Army. They knew that there was a cavalry force in their front, as we had had skirmishes with them, participated in by small detachments on each side.