The U.S. 1st Infantry Division has 3 armored infantry brigades, 1 aviation brigade, engineer brigade, etc. The specific organization is:

1st Brigade (stationed in Lai, Kansas) Fort Lee)

1st Battalion, 34th Armored Regiment

2nd Battalion, 34th Armored Regiment

1st Battalion, 16th Infantry Regiment

1st Engineer Battalion

Company C, 4th Battalion, 3rd Air Defense Regiment

101st Forward Support Battalion< /p>

331st Signal Company

2nd Brigade (Germany)

1st Battalion, 77th Armored Regiment

18th Infantry Regiment 1st Battalion

1st Battalion, 26th Infantry Regiment

3rd Brigade (Germany)

1st Battalion, 63rd Armored Regiment

2nd Battalion, 63rd Infantry Regiment

2nd Battalion, 2nd Infantry Regiment

1st (Mechanized) Infantry Division Artillery (Germany)

6th 1st Battalion, Field Artillery Regiment

1st Battalion, 7th Field Artillery Regiment

Company A, 33rd Field Artillery Regiment

1st (Mechanized) Infantry Aviation Brigade (Germany)

1st Squadron, 4th Cavalry Regiment

1st Battalion, 1st Aviation Regiment

2nd Battalion, 1st Aviation Regiment

1st (Mechanized) Infantry Division Engineer Brigade (Germany)

9th Engineer Battalion

82nd Engineer Battalion

1st (Mechanized) Infantry Division Support Command (Germany)

201st Combat Support Battalion

299th Combat Support Battalion

601st Geographical Support Battalion

Units directly under the 1st (Mechanized) Infantry Division

4th Battalion, 3rd Air Defense Artillery Regiment

101st Intelligence Battalion< /p>

121st Communications Battalion

1st Military Police Battalion