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T/O G-100

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THE G-SERIES MARINE DIVISION

The G-series table of organization was based on lessons learned in the Central Pacific campaigns of 1944. It was officially implemented throught the Fleet Marine Force in September 1945. But the 1st, 2nd, and 6th Marine Divisions adopted it during January 1945 and deployed for the Okinawa campaign under the G-series configuration. . The G-100 Marine division was a powerfully armed and flexible combat force that would have been tested by all Marine divisions in the planned invasion of Japan.

Marine Division Table of Organization G-100
Divisional units Officer Enlisted Total
Division Headquarters (88) (281) (369)
Headquarters Battalion 180 1,614 1,794
Tank Battalion 28 595 623
Service Troops 157 2,090 2,247
Motor Transport Battalion (49) (857) (906)
Service Battalion (42) (690) (732)
Medical Battalion (66) (543) (609)
Engineer Battalion 41 834 875
Pioneer Battalion 43 697 740
Artillery Regiment 185 2,476 2,661
3 Infantry Regiments 444 9,792 10,236
Division Totals 1,078 18,098 19, 176

Note 1: unit total strengths include 114 Naval officers and 680 Navy enlisted men. These were primarily doctors, hospital corpsmen and chaplains.

Note 2: Numbers in parentheses are reflected in the total of the next higher level unit.


Major Weapons of the G-series Marine Division
WEAPON NUMBER
Carbine, .30 cal., M1 10,371
Flamethrower, portable, M2-2 108
Flamethrower, mechanized , M 3-4-3 18
Gun, 37mm, antitank 24
105mm M7 motor carriage 12
M1919A4 machine gun 356
M1917A1 machine gun 162
M2 HB machine gun 161
M1A1 .45 submachine gun 49
Howitzer, 155mm , M1 12
Howitzer, 105mm , M2A1 36
2.36 in. rocket launcher , M9A1 153
60mm mortar 117
81mm mortar 36
M1911A1 .45 cal. pistol 1,707
Rifle, .30 cal., M1 6,261
M1918A2 BAR 867
Shotgun, 12 gauge 306
M4 medium tank 46
M4 medium tank, flamethrower 9
M32B2 tank retriever 3

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