The Atlanta Campaign of 1864: The Camera at War Today it is hard to imagine two massive armies maneuvering and clashing in the area that is now Atlanta: one army attempting to force its will upon the future metropolis and the other doing everything in its power to resist that will. Under the command of General William T. Sherman, a large Federal force moved out of Chattanooga, Tennessee towards the Georgia capital. The smaller Confederate army led by General Joseph E. Johnston and later John B.