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World War I American Expeditionary Forces Table of Organization, 1917-1919

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The table of organization chart will help you to quickly locate and determine what division your ancestor's military unit; regiment, battalion, and or company was assigned. The American Expeditionary Forces were organized from three types of military service. The regular or professional army consisted of divisions one through eight, state national guard units that were federalized were divisions twenty-sixty through the forty-second and the national army division numbers seventy-six to ninety-three were raised from the selective service or draft. Below are additional Family Search articles that will provide additional division history information.

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Division Pages


Type of Service Division No. Nickname Infantry Brigade Infantry Regiments Machine Gun Battalions Field Artillery Brigade Field Artillery Regiments Trench Mortar Battery Engineer Regiment Field Signal Battalion Train HQ and Military Police Supply Train Ammunition Train Engineer Train Sanitary Train Ambulance Co. & Field Hospitals
Regular Army 1 None 1,2 16,18,26,28 1,2,3 1 5,6,7, 1 1 2 1 1 1 1 1 2,3,12,13,
Regular Army 2 None 3,4 5,6,9,23 4,5,6 2 12,15,17 2 2 1 2 2 2 2 2 1,15,16,23
Regular Army 3 Marne 5,6 4,7,30,38 7,8,9 3 10,18,76 3 6 5 3 3 3 6 3 5,7,26,27
Regular Army 4 Ivy 7,8 39,47,58,59 10,11,12 4 13,16,77 4 4 8 4 4 4 4 4 19,21,28,33
Regular Army 5 Red Diamond 9,10 6,11,60,61 13,14,15 5 19,20,21 5 7 9 5 5 5 7 5 17,25,29,30
Regular Army 6 None 11,12 51,52,53,54 16,17,18 6 3,11,78 6 318 6 6 6 6 318 6 20,37,38,40
Regular Army 7 None 13,14 34,55,56,64 19,20,21 7 8,79,80 7 5 10 7 7 7 5 7 22,34,35,36
Regular Army 8 Pathfinder 15,16 8,12,13,62 22,23,24 8 2,81,83 8 319 320 8 8 8 319 8 11,31,32,33
National Guard 26 Yankee 51,52 101,102,103,104 101,102,103 51 101,102,103 101 101 101 101 101 101 101 101 101,102,103,104
National Guard 27 Empire(New York) 53,54 105,106,107,108 104,105,106 52 104,105,106 102 102 102 102 102 102 102 102 105,106,107,108
National Guard 28 Keystone 55,56 109,110,111,112 107,108,109 53 107,108,109 103 103 103 103 103 103 103 103 109,110,111,112
National Guard 29 Blue & Gray 57,58 113,114,115,116 110,111,112 54 110,111,112 104 104 104 104 104 104 104 104 113,114,115,116
National Guard 30 Old Hickory 59,60 117,118,119,120 113,114,115 55 113,114,115 105 105 105 105 105 105 105 105 117,118,119,120
National Guard 31 Dixie 61,62 121,122,123,124 116,117,118 56 116,117,118 106 106 106 106 106 106 106 106 121,122,123,124
National Guard 32 Iron Jaws 63,64 125,126,127,128 119,120,121 57 119,120,121 107 107 107 107 107 107 107 107 125,126,127,128
National Guard 33 Prairie (llinois) 65,66 129,130,131,132 122,123,124 58 122,123,124 108 108 108 108 108 108 108 108 129,130,131,132
National Guard 34 Sandstorm 67,68 133,134,135,136 125,126,127 59 125,126,127 109 109 109 109 109 109 109 109 133,134,135,136
National Guard 35 None 69,70 137,138,139,140 128,129,130 60 128,129,130 110 110 110 110 110 110 110 110 137,138,139,140
National Guard 36 Panther\Lone Star 71,72 141,142,143,144 131,132,133 61 131,132,133 111 111 111 111 111 111 111 111 141,142,143,144
National Guard 37 Buckeye 73,74 145,146,147,148 134,135,136 62 134,135,136 112 112 112 112 112 112 112 112 145,146,147,148
National Guard 38 Cyclone 75,76 149,150,151,152 137,138,139 63 137,138,139 113 113 113 113 113 113 113 113 149,150,151,152
National Guard 39 Bull's Eye\Delta 77,78 153,154,155,156 140,141,142 64 140,141,142 114 114 114 114 114 114 114 114 153,154,155,156
National Guard 40 Sunshine 79,80 157,158,159,160 143,144,145 65 143,144,145 115 115 115 115 115 115 115 115 157,158,159,160
National Guard 41 Sunset 81,82 161,162,163,164 146,147,148 66 146,147,148 116 116 116 116 116 116 116 116 161,162,163,164
National Guard 42 Rainbow 83,84 165,166,167,168 149,150,151 67 149,150,151 117 117 117 117 117 117 117 117 165,166,167,168
National Army 76 Liberty Bell 151,152 301,302,303,304 301,302,303 151 301,302,303 301 301 301 301 301 301 301 301 301,302,303,304
National Army 77 Metropolitan 153,154 305,306,307,308 304,305,306 152 304,305,306 302 302 302 302 302 302 302 302 305,306,307,308
National Army 78 Lighting 155,156 309,310,311,312 307,308,309 153 307,308,309 303 303 303 303 303 303 303 303 309,310,311,312
National Army 79 Liberty 157,158 313,314,315,316 310,311,312 154 310,311,312 304 304 304 304 304 304 304 304 313,314,315,316
National Army 80 Blue Ridge 159,160 317,318,319,320 313,314,315 155 313,314,315 305 305 305 305 305 305 305 305 317,318,319,320
National Army 81 Wildcat\Stonewall 161,162 321,322,323,324 316,317,318 156 316,317,318 306 306 306 306 306 306 306 306 321,322,323,324
National Army 82 All-American 163,164 325,326,327,328 319,320,321 157 319,320,321 307 307 307 307 307 307 307 307 325,326,327,328
National Army 83 Ohio 165,166 329,330,331,332 322,323,324 158 322,323,324 308 308 308 308 308 308 308 308 329,330,331,332
National Army 84 Lincoln 167,168 333,334,335,336 325,326,327 159 325,326,327 309 309 309 309 309 309 309 309 333,334,335,336
National Army 85 Custer 169,170 337,338,339,340 328,329,330 160 328,329,330 310 310 310 310 310 310 310 310 337,338,339,340
National Army 86 Black Hawk 171,172 341,342,343,344 331,332,333 161 331,332,333 311 311 311 311 311 311 311 311 341,342,343,344
National Army 87 Acron 173,174 345,346,347,348 334,335,336 162 334,335,336 312 312 312 312 312 312 312 312 345,346,347,348
National Army 88 Clover Leaf 175,176 349,350,351,352 337,338,339 163 337,338,339 313 313 313 313 313 313 313 313 349,350,351,352
National Army 89 Middle West 177,178 353,354,355,356 340,341,342 164 340,341,342 314 314 314 314 314 314 314 314 353,354,355,356
National Army 90 Alamo 179,180 357,358,359,360 343,344,345 165 343,344,345 315 315 315 315 315 315 315 315 357,358,359,360
National Army 91 Wild West 181,182 361,362,363,364 346,347,348 166 346,347,348 316 316 316 316 316 316 316 316 361,362,363,364
National Army 92 Buffalo 183,184 365,366,367,368 349,350,351 167 349,350,351 317 317 325 317 317 317 317 317 365,366,367,368
National Army 93 None 185,186 369,370,371,372

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