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The 51st Infantry Division was an infantry division of the United States Army, composed of units from the Florida National Guard and the South Carolina National Guard.
51st Infantry Division (United States) Wikipedia
Original Organization Date: 11 September 1946 with headquarters at Tampa, Florida. In the post-World War II restructuring of the National Guard a number of new divisions were organized. Among these was the 51st Infantry Division, composed of National Guardsmen from Florida and South Carolina.
The 51st Infantry Division never served on active federal duty and was inactivated in 1963.
Source: Wilson, John B. (1997). Maneuver and Firepower: The Evolution of Divisions and Separate Brigades. Washington, DC: Center of Military History.