3rd Brigade Combat Team
- 1st Battalion, 187th Infantry Regiment
- 1st Squadron, 33rd Cavalry Regiment
- 2nd Battalion, 187th Infantry Regiment
- 2nd Battalion, 506th Infantry Regiment
- 21st Engineer Battalion (Formally 3rd STB)
- 3rd Battalion, 187th Infantry Regiment
- 3rd Battalion, 320th Field Artillery Regiment
- 3rd BCT Headquarters & Headquarters Company
- 3rd BCT Special Troops Battalion
- 626th Brigade Support Battalion
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