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United States Army
With thanks to J.J. Hays
Infantry Division
1 April 1942
 
Infantry Division
 
Symbols Abbreviations and Terms Used
 
Infantry Divisions
1 April 1942 to 15 July 1943
Division (and type)
   [See Notes]
Infantry
Regiment
Field
Artillery
Battalion
Cavalry
Recon
Troop
Engineer
Battalion
Medical
Battalion
Quarter-
Master
Battalion /
Company
Signal
Company
Military
Police
Platoon
Ordinance
Main-
tenance
Company
1 Infantry (RA)
activated: pre-WWII
redesignated: 15.05.42
16      
18      
26      
5 (155mm)  
7 (105mm)  
32 (105mm)  
33 (105mm)  
1       1       1       1       1       1       701      
2 Infantry (RA)
activated: pre-WWII
redesignated: 01.08.42
9      
23      
38      
12 (155mm)  
15 (105mm)  
37 (105mm)  
38 (105mm)  
2       2       2       2       2       2       702      
3 Infantry (RA)
activated: pre-WWII
redesignated: 01.08.42
7      
15      
30      
9 (155mm)  
10 (105mm)  
39 (105mm)  
41 (105mm)  
3       10       3       3       3       3       703      
5 Infantry (RA)
activated: 16.10.39
redesignated: 25.05.43
2      
10      
11      
19 (105mm)  
21 (155mm)  
46 (105mm)  
50 (105mm)  
5       7       5       5       5       5       705      
6 Infantry (RA)
activated: 10.10.39
[Note 1]
1      
20      
63      
1 (105mm)  
51 (105mm)  
53 (105mm)  
80 (155mm)  
6       6       6       6       6       6       706      
7 Infantry (RA)
activated: 01.07.40
[Note 2]
17      
32      
159      
31 (155mm)  
48 (105mm)  
49 (105mm)  
57 (105mm)  
7       13       7       7       7       7       707      
8 Infantry (RA)
activated: 01.07.40
[Note 3]
13      
28      
121      
28 (155mm)  
43 (105mm)  
45 (105mm)  
56 (105mm)  
8       12       8       8       8       8       708      
9 Infantry (RA)
activated: 01.08.40
redesignated: 01.08.42
39      
47      
60      
26 (105mm)  
34 (155mm)  
60 (105mm)  
84 (105mm)  
9       15       9       9       9       9       709      
24 Infantry (RA)
activated: 01.10.41
19      
21      
34      
299      
11 (155mm)  
13 (105mm)  
52 (105mm)  
63 (105mm)  
24       3       24       24       24       24       724      
25 Infantry (AUS)
activated: 01.10.41
[Note 4]
27      
35      
298      
8 (105mm)  
64 (105mm)  
89 (105mm)  
90 (155mm)  
25       65       25       25       25       25       725      
26 Infantry (NG)
inducted: 16.01.41
101      
104      
181      
101 (105mm)  
102 (105mm)  
180 (155mm)  
262 (105mm)  
26       101       114       26       39       101       726      
27 Infantry (NG)
inducted: 15.10.40
105      
106      
165      
104 (105mm)  
105 (105mm)  
106 (155mm)  
249 (105mm)  
27       102       102       27       27       102       727      
28 Infantry (NG)
inducted: 17.02.42
109      
110      
112      
107 (105mm)  
108 (155mm)  
109 (105mm)  
229 (105mm)  
28       103       103       28       28       103       728      
29 Infantry (NG)
inducted: 03.02.41
115      
116      
175      
110 (105mm)  
111 (105mm)  
224 (105mm)  
227 (155mm)  
29       121       104       29       29       104       729      
30 Infantry (NG)
inducted:16.09.40
[Note 5]
117      
118      
119      
113 (155mm)  
118 (105mm)  
197 (105mm)  
230 (105mm)  
30       105       105       30       30       105       730      
31 Infantry (NG)
inducted: 25.11.40
[Note 6]
154      
155      
156      
167      
114 (155mm)  
116 (105mm)  
117 (105mm)  
149 (105mm)  
31       106       106       31       31       106       731      
32 Infantry (NG)       
inducted: 15.10.40      
126      
127      
128      
120 (105mm)  
121 (155mm)  
126 (105mm)  
129 (105mm)  
32       114       107       32       32       107       732      
33 Infantry (NG)
inducted: 05.03.41
[Note 7]
129      
130      
136      
122 (105mm)  
123 (155mm)  
124 (105mm)  
210 (105mm)  
33       108       108       33       33       108       733      
34 Infantry (NG)
inducted: 10.02.41
133      
135      
268      
125 (105mm)  
151 (105mm)  
175 (105mm)  
185 (155mm)  
34       109       109       34       34       109       734      
35 Infantry (NG)
inducted: 23.12.40
[Note 8]
134      
137      
140      
127 (155mm)  
161(105mm)  
216 (105mm)  
219 (105mm)  
35       60       110       35       35       110       735      
36 Infantry (NG)
indicted: 25.11.40
141      
143      
143      
131 (105mm)  
132 (105mm)  
133 (105mm)  
155 (155mm)  
36       111       111       36       36       111       736      
37 Infantry (NG)
inducted: 15.10.40
[Note 9]
145      
148      
147      
6 (105mm)  
135 (105mm)  
136 (155mm)  
140 (105mm)  
37       117       112       37       37       112       737      
38 Infantry (NG)
inducted: 17.01.41
149      
151      
152      
138 (105mm)  
139 (105mm)  
150 (155mm)  
163 (105mm)  
38       113       113       38       38       113       738      
40 Infantry (NG)
inducted: 03.03.41
[Note 10]
160      
184      
185      
143 (105mm)  
164 (105mm)  
213 (105mm)  
222 (155mm)  
40       115       115       40       40       115       740      
41 Infantry (NG)
inducted: 16.09.40
162      
163      
186      
146 (105mm)  
167 (105mm)  
205 (105mm)  
218 (155mm)  
41       116       116       41       41       116       741      
43 Infantry (NG)
inducted: 24.02.41
103      
169      
172      
103 (105mm)  
152 (105mm)  
169 (105mm)  
192 (155mm)  
43       118       118       43       43       118       743      
44 Infantry (NG)
inducted: 16.09.40
[Note 11]
71      
114      
174      
156 (105mm)  
157 (155mm)  
217 (105mm)  
220 (105mm)  
44       63       119       44       44       119       744      
45 Infantry (NG)
inducted: 16.02.40
157      
179      
180      
168 (105mm)  
160 (105mm)  
171 (105mm)  
189 (155mm)  
45       120       120       45       45       120       745      
63 Infantry (AUS)
activated: 15.06.43
253      
354      
355      
718 (155mm)  
861 (105mm)  
862 (105mm)  
863 (105mm)  
63       263       363       63       563       ?       763      
66 Infantry (AUS)
activated: 15.04.43
262      
263      
264      
721 (155mm)  
870 (105mm)  
871 (105mm)  
872 (105mm)  
66       266       366       66       566       ?       766      
69 Infantry (AUS)
activated: 15.05.43
271      
272      
273      
724 (155mm)  
879 (105mm)  
880 (105mm)  
881 (105mm)  
69       269       369       69       569       ?       769      
70 Infantry (AUS)
activated: 15.06.43      
274      
275      
276      
725 (155mm)  
882 (105mm)  
883 (105mm)  
884 (105mm)  
70       270       370       70       570       ?       770      
75 Infantry (AUS)
activated: 15.04.43
289      
290      
291      
730 (155mm)  
897 (105mm)  
898 (105mm)  
899 (105mm)  
75       275       372       75       575       ?       775      
76 Infantry  (OR)
activated: 15.06.42
converted: 01.08.42
304      
385      
417      
302 (105mm)  
355 (105mm)  
364 (155mm)  
901 (105mm)  
76       301       301       76       76       ?       776      
77 Infantry (OR)
activated: 25.03.42
converted: 01.08.42
305      
306      
307      
304 (105mm)  
305 (105mm)  
306 (155mm)  
902 (105mm)  
77       302       302       77       77       ?       777      
78 Infantry (OR)
activated: 20.02.42
converted: 01.03.43
309      
310      
311      
308 (105mm)  
308 (105mm)  
309 (155mm)  
903 (105mm)  
78       303       303       78       78       ?       778      
79 Infantry (OR)
activated: 12.06.42
converted: 01.08.42
313      
314      
315      
310 (105mm)  
311 (105mm)  
312 (155mm)  
904 (105mm)  
79       304       304       79       79       ?       779      
80 Infantry (OR)
activated: 15.06.42
converted: 01.08.42
317      
318      
319      
313 (105mm)  
314 (105mm)  
315 (155mm)  
905 (105mm)  
80       305       305       80       80       ?       780      
81 Infantry (OR)
activated: 15.06.42
converted: 01.08.42
321      
322      
323      
316 (105mm)  
317 (105mm)  
318 (155mm)  
906 (105mm)  
81       306       306       81       81       ?       781      
82 Infantry (OR)
activated: 25.03.42
converted: 24.05.42
[Note 12]
325      
326      
327      
319 (105 mm)  
320 (105 mm)  
321 (155 mm)  
907 (105 mm)  
83       307       307       82       82       ?       782      
83 Infantry (OR)
activated: 15.08.42
converted: 15.08.42
329      
330      
331      
322 (105mm)  
232 (105mm)  
324 (155mm)  
908 (105mm)  
83       308       308       83       83       ?       783      
84 Infantry (OR)
activated: 15.10.42
converted: 15.10.42
333      
334      
335      
325 (105mm)  
326 (105mm)  
327 (155mm)  
909 (105mm)  
84       309       309       84       84       ?       784      
85 Infantry (OR)
activated: 15.05.42
converted: 01.08.42
337      
338      
339      
328 (105mm)  
329 (105mm)  
403 (155mm)  
910 (105mm)  
85       310       310       85       85       ?       785      
86 Infantry (OR)
activated: 15.12.42
converted: 15.12.42
341      
342      
343      
331 (105mm)  
332 (105mm)  
404 (155mm)  
911 (105mm)  
86       311       311       86       86       ?       786      
87 Infantry (OR)
activated: 15.12.42
converted: 15.12.42
345      
346      
347      
334 (105mm)  
335 (155mm)  
336 (105mm)  
912 (105mm)  
87       312       312       87       87       ?       787      
88 Infantry (OR)
activated: 15.07.42
converted: 01.08.42
349      
350      
351      
337 (105mm)  
338 (105mm)  
339 (155mm)  
913 (105mm)  
88       313       313       88       88       ?       788      
90 Infantry (OR)
activated: 25.03.42
converted: 01.05.43
Note 13
357      
358      
359      
343 (105mm)  
344 (105mm)  
345 (155mm)  
915 (105mm)  
90       315       315       90       90       ?       790      
91 Infantry (OR)
activated: 15.08.42
converted: 15.08.42
361      
362      
363      
346 (105mm)  
347 (105mm)  
348 (155mm)  
916 (105mm)  
91       316       316       91       91       ?       791      
92 Infantry (Colored)(AUS)
activated: 15.10.42
365      
370      
371      
597 (105mm)  
598 (105mm)  
599 (105mm)  
600 (155mm)  
92       317       317       92       92       ?       792      
93 Infantry (Colored)(AUS)
activated: 15.05.42
25      
368      
369      
593 (105mm)  
594 (105mm)  
595 (105mm)  
596 (155mm)  
93       318       318       93       93       ?       793      
94 Infantry (OR)
activated: 15.09.42
converted: 15.09.42
301      
302      
376      
301 (105mm)  
356 (105mm)  
390 (155mm)  
919 (105mm)  
94       319       319       94       94       ?       794      
95 Infantry (OR)
activated: 15.07.42
converted: 01.08.42
377      
378      
379      
359 (105mm)  
359 (105mm)  
369 (155mm)  
920 (105mm)  
95       320       320       95       95       ?       795      
96 Infantry (OR)
activated: 15.08.42
converted: 15.08.42
381      
382      
383      
361 (105mm)  
362 (105mm)  
363 (155mm)  
921 (105mm)  
96       321       321       96       96       ?       796      
97 Infantry (OR)
activated: 25.02.43
converted: 25.02.43
303      
386      
387      
303 (105mm)  
365 (105mm)  
389 (155mm)  
922 (105mm)  
97       322       322       97       97       ?       797      
98 Infantry (OR)
activated: 15.09.42
converted: 15.09.42
389      
390      
391      
367 (105mm)  
368 (105mm)  
369 (155mm)  
923 (105mm)  
98       323       323       98       98       ?       798      
99 Infantry (OR)
activated: 15.11.42
converted: 15.11.42
393      
394      
395      
370 (105mm)  
371 (105mm)  
372 (155mm)  
924 (105mm)  
99       324       324       99       99       ?       799      
100 Infantry (OR)
activated: 15.11.42
converted: 15.11.42
397      
398      
399      
373 (155mm)  
274 (105mm)  
375 (105mm)  
925 (105mm)  
100       325       325       100       100       ?       800      
102 Infantry (OR)
activated: 15.09.42
converted: 15.09.42
405      
406      
407      
379 (105mm)  
380 (105mm)  
381 (155mm)  
927 (105mm)  
102       327       327       102       102       ?       802      
103 Infantry (OR)
activated: 15.11.42
409      
410      
411      
382 (105mm)  
383 (105mm)  
384 (155mm)  
928 (105mm)  
103       328       328       103       103       ?       803      
104 Infantry (OR)
activated: 15.09.42
converted: 15.09.42
413      
414      
415      
385 (105mm)  
386 (105mm)  
387 (155mm)  
929 (105mm)  
104       329       329       104       104       ?       804      
106 Infantry (AUS)
activated: 15.02.43
422      
423      
424      
589 (105mm)  
590 (105mm)  
591 (105mm)  
592 (155mm)  
106       81       331       106       106       ?       806      
Americal
activated: 24.05.42
132      
164      
182      
221 (155mm)  
245 (105mm)  
246 (105mm)  
247 (105mm)  
21       57       121       125       26       ?       721      
NOTES
(RA)    Regular Army divisions, with date they were redesignated as Infantry Divisions.
(NG)    National Guard divisions with date they were inducted into Federal service.
(OR)    Organized Reserve divisions with date they were ordered into active military service. Some OR divisions were activated directly as infantry divisions, while others were converted later. Some, but not all of these latter divisions functioned as Replacement Pool divisions until they too were finally converted to infantry divisions. (AUS) Army of the United States division with activation dates.
  [1] The 6th Motorized Division until 21.05.43; then 6th Infantry Division.
  [2] The 7th Motorized Division until 01.01.43; then 7th Infantry Division.
  [3] The 8th Motorized Division until 15.05.43; then 8th Infantry Division.
  [4] The 298th Infantry Regiment was replaced by the 161st Infantry Regiment on 23.07.42.
  [5] The 118th Infantry Regiment was replaced by the 120th Infantry Regiment on 01.09.42.
  [6] The 156th Infantry Regiment was relieved from the division on 14.07.42.
  [7] The 123rd Infantry Regiment was assigned on 28.09.42.
  [8] The 140th Infantry Regiment was replaced by the 320th Infantry Regiment on 26.01.43.
  [9] The 147th Infantry Regiment was relieved from the division in April 1942.
[10] The 184th Infantry Regiment was relieved from the division on 16.06.42. The 160th Infantry Regiment was replaced by the 165th Infantry Regiment on 01.09.42. The 108th Infantry Regiment was assigned to the division as of 01.09.42.
[11] The 174th Infantry Regiment was replaced by the 324th Infantry Regiment on 01.02.43.
[12] The 82nd Infantry Division until 15.08.42; then 82nd Airborne Division, moved to Fort Bragg, NC and reorganized.
[13] The 90th Motorized Division until 01.05.43; then 90th Infantry Division.
 
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