Western Theater of the American Civil War heart of the Confederacy. Bragg, whose personal friendship with Confederate President Jefferson Davis saved his command following his defeats at Perryville and Stones River, was finally relieved of duty and replaced by General Joseph E. Johnston. In March 1864, Grant was promoted to lieutenant general and went east to assume command of all the Union armies. Sherman succeeded him in command of the Military Division of the Mississippi. Grant devised a strategy for simultaneous advances across the Confederacy. It was intended to destroy or fix Robert E. Lee's army in Virginia with three major thrusts (under Meade, Butler, and Sigel)
General officers in the Confederate States Army combat, to be the senior general officer in the CSA. That seniority strained the relationship between Joseph E. Johnston and Jefferson Davis. Johnston considered himself the senior officer in the Confederate States Army and resented the ranks that President Davis had authorized. However, his previous position in the U.S. Army was staff, not line, which was evidently a criterion for Davis regarding establishing seniority and rank in the subsequent Confederate States Army. On February 17, 1864, legislation was passed by the Congress to allow President Davis to appoint an officer to command the Trans-Mississippi Department in the Far West, with