 Complete the following phrase:  Sherman proceeded to invade the state of Georgia with three armies: the 60,000-strong Army of the Cumberland under George Henry Thomas, the 25,000-strong Army of the Tennessee under James B. McPherson, and the 13,000-strong Army of the Ohio under John M. Schofield. He commanded a lengthy campaign of maneuver through mountainous terrain against Confederate General Joseph E. Johnstons Army of Tennessee, attempting a direct assault only at the 