Confederate States Army from other causes such as accidents, which would add several thousand to the death toll. The main Confederate armies, the Army of Northern Virginia under General Robert E. Lee and the remnants of the Army of Tennessee and various other units under General Joseph E. Johnston, surrendered to the U.S. on April 9, 1865 (officially April 12), and April 18, 1865 (officially April 26). Other Confederate forces surrendered between April 16, 1865 and June 28, 1865. By the end of the war, more than 100,000 Confederate soldiers had deserted, and some estimates put the number as high as one third
Fourth Corps, Army of Northern Virginia Commanded by temporary Lt. General Anderson, it was made up of units that before had served around Richmond and Petersburg as part of General Beauregard's Department of North Carolina and Southern Virginia. The Fourth Corps spent the winter of 1864/5 encamped around Petersburg as part of the Army of Northern Virginia. In April the Army of the Potomac, under General Ulysses Grant, broke through the defences and successfully concluded the siege of Richmond, initiating the start of the Appomattox Campaign. The Fourth Corps retreated with the rest of General Lee's Army but was largely destroyed in the Battle of Sailor's