The Department of the South was a military department of the United States Army that existed in several iterations in the 19th century.
During the American Civil War, the Department of the South comprised Union Army troops occupying the states of Florida, Georgia, and South Carolina. This included troops stationed at Hilton Head, Morris Island, Savannah, Georgia and Pensacola, Florida. Until 1864, its command was co-terminus with that of the X Corps.
This iteration of the Department of the South consisted of posts in Georgia, Alabama and Florida, in what was then the Third Military District.
This iteration of the Department of the South consisted of posts in the Carolinas, in what was then the Second Military District. It was commanded by General Daniel Sickles.
In this iteration, the Department of the South consisted of reconstructed states in the former Confederacy. It was subordinate to the Military Division of the South until 1876, and the Military Division of the Atlantic after that.
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