Americal Division Order of Battle

Guadalcanal

To 1 Marine Division:

Hq & Hq Co, 51 Infantry Brigade (forward echelon)
164 Infantry Regiment
182 Infantry Regiment, less 3 Bn
Hq, Americal Division Artillery
245 Field Artillery Battalion
246 Field Artillery Battalion
Prov Btry K, 246 Field Artillery Battalion
57 Engineer Combat Battalion, less dets
Prov Cos B and H, 101 Medical Regiment
Hq, 101 Quartermaster Regiment
Co A and 1 Plat Co B, 101 Quartermaster Regiment
Finance Detachment

To 2 Marine Division:

57 Engineer Combat Battalion
1 Bn, 182 Infantry Regiment

To Composite Army-Marine Division:

57 Engineer Combat Battalion
182 Infantry Regiment, less 3 Bn

To 25 Infantry Division:

164 Infantry Regiment
3 Bn, 182 Infantry Regiment
Mobile Combat Reconnaissance Squadron

To 1 Bn, 8 Marine Regiment:

Co A, 57 Engineer Combat Battalion)

To 147 Infantry Regiment:

Co B, 57 Engineer Combat Battalion)

To 161 Infantry Regiment:

Co A, 57 Engineer Combat Battalion)

To XIV Corps:

57 Engineer Combat Battalion
132 Infantry Regiment
164 Infantry Regiment
182 Infantry Regiment

Bougainville

To 37 Infantry Division:

2 Bn, 164 Infantry Regiment)

To XIV Corps:

2 Bn, 164 Infantry Regiment)

Leyte and Samar

To Eighth Army:

1 Bn, 132 Infantry Regiment
Americal Division Artillery (detachment)
26 Signal Company (detachment)
721 Ordnance Light Maintenance Company (detachment)

To Eighth Army Area Command:

164 Infantry Regiment
245 Field Artillery Battalion
Co C, 57 Engineer Combat Battalion
Co A, 121 Medical Battalion

Cebu, Bohol, and Negros Oriental

To 108 Infantry RCT (Mindanao):

3 Bn, 164 Infantry Regiment
Btry A, 245 Field Artillery Battalion

To Eighth Army Area Command:

164 Infantry Regiment)

ASSIGNMENT AND ATTACHMENT TO HIGHER HEADQUARTERS

New Caledonia

United States Army Forces in the South Pacific Area

Guadalcanal

United States Army Forces in the South Pacific Area
XIV Corps

Viti Levu, Fiji

II Island Command)

Bougainville

XIV Corps
United States Army Forces in the Far East

Leyte and Samar

X Corps (Eighth Army)
Eighth Army

Cebu, Bohol and Negros Oriental

Eighth Army
XI Corps (Sixth Army)
XI Corps (Eighth Army)

Japan

XI Corps (Eighth Army)