40th Infantry Division (United States) - Structure As of 2009

Structure As of 2009

The 40th Infantry Division (Mechanized) is commanded by Brigadier General Scott W. Johnson, with Command Sergeant Major Andres H. Roman serving as his Senior Enlisted Advisor. The 40th Infantry Division exercises Training and Readiness Oversight of the following elements, they cannot be considered organic:

  • Special Troops Battalion
  • 29th Infantry Brigade Combat Team (HI NG)
    • Special Troops Battalion
    • 1st Squadron, 299th Cavalry Regiment (RSTA)
    • 1st Battalion, 158th Infantry Regiment (AZ NG)
    • 100th Battalion, 442nd Infantry Regiment (Army Reserve) (AS, GU, HI, MP)
    • 1st Battalion, 487th Field Artillery Regiment
    • 29th Brigade Support Battalion
  • 41st (Infantry) Brigade Combat Team (OR NG)
    • Special Troops Battalion
    • 1st Squadron, 82nd Cavalry Regiment (RSTA)
    • 2nd Battalion, 162nd Infantry Regiment
    • 1st Battalion, 186th Infantry Regiment
    • 2nd Battalion, 218th Field Artillery Regiment
    • 141st Brigade Support Battalion
  • 79th (Infantry) Brigade Combat Team (CA NG)
    • Special Troops Battalion
    • 1st Squadron, 18th Cavalry Regiment (RSTA)
    • 1st Battalion, 184th Infantry Regiment
    • 1st Battalion, 160th Infantry Regiment
    • 1st Battalion, 143rd Field Artillery Regiment
    • 40th Brigade Support Battalion
  • 81st (Heavy) Brigade Combat Team (WA NG)
    • Special Troops Battalion
    • 1st Squadron, 303rd Cavalry Regiment (RSTA)
    • 1st Battalion, 185th Armor Regiment (CA NG)
    • 1st Battalion, 161st Infantry Regiment
    • 2nd Battalion, 146th Field Artillery Regiment
    • 181st Brigade Support Battalion
  • Combat Aviation Brigade, 40th Infantry Division (CA NG)
    • Headquarters and Headquarters Company
    • 1st Battalion (General Support), 168th Aviation Regiment(WA NG)
    • 1st Battalion (Assault), 140th Aviation Regiment
    • 3rd Battalion (S&S), 140th Aviation Regiment
    • 1st Battalion (Attack/Recon), 211th Aviation Regiment(UT NG)
    • 640th Aviation Support Battalion

In July 2006, as part of the Army National Guard's modularization process, the 40th Infantry Division reorganized into four brigade combat teams and one aviation brigade. National Guard units from California, Oregon, Hawaii, Arizona, Washington, Alaska, New Mexico, Indiana, Nebraska, Utah and Guam are today part of the 40th Infantry Division.

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