In May of 1864 US Grant began a concerted campaign to bring the rebellion to an end. Setting the Army of the Potomac in motion in northern Virginia, Grant also set Sherman loose in Georgia for an all out asphyxiation of the Confederacy.
In the spring of 1864 prospects for the Confederacy were looking dim, but southerners had one hope. In the fall of 1864 there would be a presidential election. If the northern people could be made to believe that the war could not be won on the battlefield then their newly elected leader would have to sue for peace.
In this final stretch of the war the rebels would fight with desperation and the Union troops would find that a lot more blood would have to be spilt before it was all over…. See the link below for an outline of the Overland Campaign: