Home Page World War II Armed Forces – Orders of Battle and Organizations Last Updated 21.07.2005
United States Army
Authorized Organization
1940 Infantry Division
1 November 1940
 
Infantry Division, (T/O 70), dated 1 Nov 40
 
Symbols Abbreviations and Terms Used Division, T/O 70, dated 1 November 1940
 
Infantry Divisions
7 December 1941
These are the Regular Army divisions.
Known as the "triangular" divisional organization.
Division
    date raised
Infantry
Regiment
Field
Artillery
Battalion
Cavalry
Recon
Troop
Engineer
Battalion
Signal
Company
Quarter-
Master
Battalion
Medical
Battalion
Military
Police
Company
Antitank
Battalion
1
   pre-WWII
16
18
26
5 (155mm)
7 (105mm)
32 (105mm)
33 (105mm)
1 1 1 1 1 1
2
   pre-WWII
9
23
38
12 (155mm)
15 (105mm)
37 (105mm)
38 (105mm)
2 2 2 2 2 2
3
   pre-WWII
7
15
30
9 (155mm)
10 (105mm)
39 (105mm)
41 (105mm)
3 10 3 3 3 3 3
5
   16.10.39
2
10
11
19 (105mm)
21 (155mm)
50 (105mm)
46 (105mm)
5 7 5 5 5 5 5
6
   10.10.39
1
20
63
1 (105mm)
51 (105mm)
53 (105mm)
80 (155mm)
6 6 6 6 6 6
7
   01.07.40
17
32
159
31 (155mm)
48 (105mm)
49 (105mm)
57 (105mm)
7 13 7 7 7 7
8
   01.07.40
13
28
34
28 (155mm)
43 (105mm)
45 (105mm)
56 (105mm)
8 12 8 8 8 8
9
   01.08.40
39
47
60
26 (105mm)
34 (155mm)
60 (105mm)
84 (105mm)
9 15 9 9 9 9
24
   01.10.41
19
21
299
11 (155mm)
13 (105mm)
52 (105mm)
63 (105mm)
24 3 24 24 24 24
25
   01.10.41
27
35
298
8 (105mm)
64 (105mm)
89 (105mm)
90 (155mm)
25 65 25 25 25 25
 
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Infantry Division Headquarters Infantry Regiment Division Artillery Cavalry Troop, Reconnaissance, Mechanized Engineer Battalion Antitank Battalion Signal Company Quartermaster Battalion Medical Battalion Infantry Division Headquarters and Military Police Company