U.S. Army, Alabama National Guard
- 8 July 1961 Organized Homewood (Birmingham), Alabama
- February 1963 re-organized with elements from Florida, Louisiana, Mississippi
- June 1963 relocated Headquarters to Birmingham, Alabama
- 8 February 1966 re-organized to include elements of the US Army National Guard from North Carolina
- 1 January 1968 re-organized to remove elements of the US Army National Guard from North Carolina
- September 1972 re-organized to remove elements of the US Army National Guard from Louisiana
- September 1972 re-organized to include elements of the US Army National Guard from Rhode Island
- 30 September 1978 re-organized to remove elements of the US Army National Guard from Rhode Island
- Current: Headquarters Detachment , 20th Special Forces Group, Birmingham, Alabama
Engagements: Vietnam War, Gulf War, War on Terrorism, War on ISIS