The 1936 pattern US infantry division moved the chemical batteries to a chemical battalion attached at the division level (instead of having the batteries attached to individual regiments), added anti-tank batteries at regimental level equipped with the new 1.5" AT gun, and (in theory) added a tank battalion attached to the division. In practice, tank battalions were few and far between, most divisions having only a company (and often a short company at that) of M2 or M3 light tanks.
US Infantry - 1936 pattern
Infantry Platoon - (40 men, 1 officer, 3 BAR)
3 squads - 13 men, 1 BAR
Command - 1 CO, 1 man
Weapons Platoon - (24 men, 1 officer, 3 MMGs, 3 mortars)
3 MG teams - 4 men, 1 MMG
3 mortar teams - 4 men, 1 2.2" mortar
Infantry Company - (151 men, 6 officers)
3 platoons (40 men, 1 officer)
Weapons Platoon (24 men, 1 officer)
Command (1 CO, 1 XO, 1 NCO, 6 men)
Weapons Company - (88 men, 3 officers)
MG Platoon (32 men, 1 officer, 8 MMGs)
Mortar Platoon (28 men, 1 officer, 4 3.2" mortar)
HMG Platoon (28 men, 1 officer, 4 0.50" HMGs)
Regimental Gun Battery (68 men, 2 officers)
3 Sections (16 men, 2 3" field guns)
Command (1 CO, 1 XO, 20 men, 2 MMGs)
Antitank Battery (60 men, 2 officers)
3 Sections (16 men, 2 1.5" AT guns, 2 MMGs)
Command (1 CO, 1 XO, 12 men)
Chemical Battery (164 men, 6 officers)
4 platoons (36 men, 1 officer, 3 4.2" chemical mortars)
Command (1 CO, 1 XO, 20 men, 2 MMGs)
Field Artillery Battery (68 men, 2 officers)
3 Sections (16 men, 2 4" howitzers)
Command (1 CO, 1 XO, 20 men, 2 MMGs)
Heavy Field Artillery Battery (80 men, 2 officers)
3 Sections (20 men, 2 6"howitzers)
Command (1 CO, 1 XO, 20 men, 2 MMGs)
Light AA Battery - (60 men, 2 officers)
3 AA Sections (18 men, 2 1.5" AA guns)
Command (1 CO, 1 XO, 6 men)
Heavy AA Battery (78 men, 5 officers)
3 AA Sections (18 men, 1 officer, 2 3" AA guns)
Command (1 CO, 1 XO, 24 men, 2 MMGs)
Infantry Battalion - (561 men, 25 officers)
3 Infantry Companies (151 men, 6 officers)
Weapons Company (88 men, 3 officers)
Command (1 CO, 1 XO, 2 Staff, 20 men)
Field Artillery Battalion (320 men, 10 officers)
4 Field Artillery Batteries (68 men, 2 officers)
Observer Section (18 men)
Command (1 CO, 1 XO, 2 Staff, 30 men)
Heavy Field Artillery Battalion (288 men, 8 officers)
3 Heavy Field Artillery Batteries (80 men, 2 officers)
Observer Section (18 men)
Command (1 CO, 1 XO, 2 Staff, 30 men)
Anti-Aircaft Battalion (450 men, 18 officers)
2 Batteries Heavy AA (75 men, 5 officers)
2 Batteries Light AA (60 men, 2 officers)
Command (1 CO, 1 XO, 2 Staff, 30 men)
Chemical Battalion (710 men, 28 officers)
4 Chemical Battery (164 men, 6 officers)
Observer Section (24 men)
Command (1 CO, 1 XO, 2 Staff, 30 men)
Infantry Regiment - (2767 men, 118 officers)
4 Infantry Battalions (561 men, 23 officers)
1 Regimental Gun Battery (68 men, 2 officers)
1 Antitank Battery (60 men, 2 officers)
1 Light AA Battery (60 men, 2 officers)
1 Support Company (135 men, 4 officers)
1 Signals Company (126 men, 4 officers)
Command (1 CO, 1 XO, 6 staff, 74 men)
Artillery Regiment - (1646 men, 60 officers)
4 Field Artillery Battalions (320 men, 10 officers)
1 Light AA Battery (60 men, 2 officers)
1 Support Company (135 men, 4 officers)
1 Signals Company (126 men, 4 officers)
Command (1 CO, 1 XO, 8 staff, 45 men)
Infantry Division (16155 men, 691 officers)
4 Infantry Regiments (2767 men, 118 officers)
1 Artillery Regiment (1646 men, 60 officers)
1 Tank Battalion (217 men, 19 officers)
1 Chemical Battalion (710 men, 28 officers)
1 Anti-Aircraft Battalion (450 men, 18 officers)
1 Engineering Battalion (626 men, 22 officers)
1 Signals Battalion (482 men, 16 officers)
1 Support Battalion (400 men, 14 officers)
1 Transport Battalion (410 men, 18 officers)
Command (1 CO, 1 XO, 22 staff, 146 men)
This post has been edited 2 times, last edit by "Hrolf Hakonson" (Jan 31st 2009, 4:00am)