Home Page World War II Armed Forces — Orders of Battle and Organizations Last Updated 17.08.2023
United States Army
Infantry Division
1 October 1940
Infantry Division
 
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 Regiment Infantry Regiment Infantry Regiment Division Artillery Cavalry Troop, Reconnaissance, Mechanized Engineer Battalion Antitank Battalion Signal Company Quartermaster Battalion Medical Battalion Division Headquarters and MP Company