40th Infantry Detachment
160th Infantry Detachment
40th Military Police Company
140th Chemical Company
40th Infantry Division Band
240th Signal Battalion
140th Military Intelligence Battalion (US Army Reserve)
2d Battalion, 160th Infantry Regiment
3d Battalion, 160th Infantry Regiment
1st Battalion, 185th Armor Regiment
1st Battalion, 221st Armor Regiment (Nevada)
2d Brigade
4th Battalion, 160th Infantry Regiment
2d Battalion, 185th Armor Regiment
3d Battalion, 185th Armor Regiment
3d Brigade
2d Battalion, 159th Infantry Regiment
1st Battalion, 184th Infantry Regiment
1st Battalion, 149th Armor Regiment
Aviation Brigade
1st Squadron, 18th Cavalry Regiment
1st Battalion, 140th Aviation Regiment
Company D (Command), 140th Aviation Regiment
Company E (Assault), 140th Aviation Regiment
Company F (Aviation Intermediate Maintenance), 140th Aviation Regiment
Engineer Brigade
132d Engineer Battalion
Division Artillery
1st Battalion, 143d Field Artillery Regiment
2d Battalion, 144th Field Artillery Regiment
3d Battalion, 144th Field Artillery Regiment
Battery D (Multiple Launch Rocket System), 144th Field Artillery Regiment
Battery F (Target Aquisition), 144th Field Artillery Regiment
Division Support Command
540th Main Support Battalion
40th Support Battalion
240th Support Battalion
340th Support Battalion