The final major battle in the West in the American Civil War, the two day battle of Nashville that commenced on December 15, 1864 ,was a decisive Union victory. Delayed by bad weather, Union general Thomas endured a steady stream of telegrams from Washington and Grant demanding that he attack. Thomas would not do so until he was ready. Grant, who had never had a good relationship with Thomas, decided to remove him, and only the knowledge that an attack was imminent stayed the decision:
I consequently urged Thomas in frequent dispatches sent from City Point to make the attack at once. The country was alarmed, the administration was alarmed, and I was alarmed lest the very thing would take place which I have just described that is, Hood would get north. It was all without avail further than to elicit dispatches from Thomas saying that he was getting ready to move as soon as he could, that he was making preparations, etc. At last I had to say to General Thomas that I should be obliged to remove him unless he acted promptly. He replied that he was very sorry, but he would move as soon as he could.
General Logan happening to visit City Point about that time, and knowing him as a prompt, gallant and efficient officer, I gave him an order to proceed to Nashville to relieve Thomas. I directed him, however, not to deliver the order or publish it until he reached there, and if Thomas had moved, then not to deliver it at all, but communicate with me by telegraph. After Logan started, in thinking over the situation, I became restless, and concluded to go myself. I went as far as Washington City, when a dispatch was received from General Thomas announcing his readiness at last to move, and designating the time of his movement. I concluded to wait until that time. He did move, and was successful from the start. This was on the 15th of December. General Logan was at Louisville at the time this movement was made, and telegraphed the fact to Washington, and proceeded no farther himself.
Heavily outnumbering the Confederates, Thomas planned to attack the exposed Confederate left while making feint attacks on the Confederate right. Hood was not fooled by the feint attacks and throughout the day sent reinforcements to the Confederate left. After hard fighting, Thomas took the five redoubts guarding the Confederate left.
The next day Thomas repeated his tactics, with attacks on the new Confederate left and feint attacks on the Confederate right. As the sun was going down, the Confederate left disintegrated and Thomas had won the battle. Thomas pursued Hood relentlessly until Hood crossed the Tennessee River on December 28. The Confederate Army of Tennessee was finished as an effective combat force. Confederate casualties were 6000 to 3000 Union.