Division XXI

Units

• HHC (6 M4 C2V)
• 1st Brigade "Raider"
• 2nd Brigade "Warhorse"
• 3rd Brigade "Iron Brigade"
• 4th Brigade "Iron Eagles"
• 4th Aviation Brigade
• Fires Brigade DIVARTY
• Sustainment Brigade DISCOM
• Engineer Brigade
• 1-44 ADA Bn
• 124th SIG Bn
• 104th MI Bn
• 4th MP Co
• 610th Engineer Detachment

Associate Units [ARNG/USAR]

Reserve Units:
• 493rd Engineer Group (Corps)
• 478th Engineer Battalion
• 841st Engineer Battalion
• 980th Engineer Battalion
• 373rd Corps Support Battalion
• 450th Chemical Battalion
  
  National Guard Units:
• 40th Infantry Division [CA ARNG]
• 332nd (HQ) Corps ROAC [WI ARNG]
• 875th Engineer Battalion [AR ARNG]
• 45th Field Artillery Bde [OK ARNG]

Habitual Support Units

• 502nd Personnel Support Battalion
• 230th Finance Battalion
• 11th ASOS (Air Force)

Facilities

• Fort Hood, TX
• Fort Carson, CO (3rd Brigade)

References

Official Homepage

• 4th Infantry Division
• 4th Infantry Division in Iraq
• 4th Infantry Goes 'Modular'

Un-Official Homepage

• 4th Infantry Division (Mechanized)