23rd Infantry Division (AMERICAL) Order of Battle Assigned and Attached Units
Division Infantry
2d Battalion, 1st Infantry
3d Battalion, 1st Infantry
4th Battalion, 3rd Infantry
1st Battalion, 6th Infantry
1st Battalion, 20th Infantry
3rd Battalion, 21st Infantry
4th Battalion, 21st Infantry
4th Battalion, 31st Infantry
1st Battalion, 46th Infantry
5th Battalion, 46th Infantry
1st Battalion, 52nd Infantry
Division Artillery
6th Battalion, 11th Artillery (105mm)
1st Battalion, 14th Artillery (105mm)
3d Battalion, 16th Artillery (155mm)
3rd Battalion, 18th Artillery (175mm/8" SP)
1st Battalion, 82d Artillery (155mm)
3d Battalion, 82d Artillery (105mm)
Battery G, 55th Artillery (.50-cal MG)
Division Aviation
16th Aviation Group
14th Aviation Battalion (Combat)
123d Aviation Battalion (Airmobile)
212th Aviation Battalion (Combat)
Division Reconnaissance
Troop F, 8th Cavalry (Air)
Troop E, 1st Cavalry (Armored)
Troop F, 17th Cavalry (Armored)
Company E, 51st Infantry (Long Range Patrol)
Company G, 75th Infantry (Ranger)
AMERICAL Scout Infantry Company (Provisional)
Troop H, 17th Cavalry
Division Support
23d Medical Battalion
23d Supply and Transport Battalion
26th Engineer Battalion
523d Signal Battalion
723d Maintenance Battalion
23d Administration Company
23d Military Police Company
328th Army Security Agency Company
635th Military Intelligence Company
3d Military History Detachment
Americal Combat Center (Provisional)
27th Chemical Detachment
87th Chemical Detachment
90th Chemical Detachment
10th Public Information Detachment
31st Public Information Detachment
Other unit on temporary assignment
1st Squadron, 1st Cavalry (Armored)
Chu Lai Defense Command (Provisional)
23rd Infantry Division (AMERICAL) Formation Assets
Components Assets derived from: 23d Infantry Division Support Command 15th Support Brigade 23d Administration Company Company A, 6th Support Battalion 23d Supply and Transport Company 94th Supply and Service Battalion 723d Maintenance Battalion 188th Maintenance Battalion (bulk) 26th Engineer Battalion Company A 175th Engineer Company Company B 555th Engineer Company Company C 6th Engineer Company Company D Company B, 39th Engineer Company Company E (Float Bridge) 554th Engineer Company 523d Signal Battalion 509th Signal Battalion Company E, 51st Infantry (Long Range Patrol) Detachment A (Long Range Patrol)* 123d Aviation Battalion 161st Aviation Company*Provisional long range patrol unit formed from the provisional long range patrol detachment, 196th Infantry Brigade and men with long range patrol experience from the 11th and 198th Infantry Brigades.