Appendix A: Major Tactical Units of Tenth Army In the Ryukyus Campaign
The following list shows the organization of Tenth Army and its major tactical components as they entered combat. The components omitted are the Island Command, which had a nontactical mission; the 81st Infantry Division, which did not participate in the battle; and the ad Marine Division, of which only the 8th Marine Regiment landed on Okinawa, late in the campaign.
The list was compiled from Tenth Army Action Report, Ryukyus. Discrepancies found in this Action Report have been eliminated, but, despite careful research and checking, other minor errors may still exist. Such errors will be corrected in the Order of Battle of the United States Army, World War II, now being prepared for this series.
Tenth Army
Hq Tenth Army
SPECIAL TROOPS
Hq & Hq Det, Sp Trs, Tenth Army
163rd Liaison Sq (AAF)
1st Depot Unit (AAF)
3236th, 3240th Sig Serv Dets (FA)
3040th QM Car Co (-2 Plats)
Psychological Warfare Tm
143rd–152nd Photo Interp Tms
Base Censorship Det
32nd, 33rd Japanese Ord of Btl Tms
1st Info & Hist Serv
K Hist Unit
Civ Correspondent Gp
303rd, 304th Hq Int Dets
105th, 901st, 902nd, 903rd Army Postal Units
357th Provisional Army Postal Unit
310th Counter intelligence Corps Det
Ten Counter Intelligence Corps Opns Tms
Two Counter Intelligence Corps Hq & Adm Tms
ARMORED
20th Armored Gp
COAST ARTILLERY (AA)
Hq & Hq Btry, Tenth Army (AAA)
Hq & Hq Btry, 53rd AAA Brig
Hq & Hq Btrys, 43rd, 44th, 97th, 136th, 137th AAA Gps
96th, 98th, 369th, 503rd, 505th, 948th AAA Gun Bns, Semimobile
834th AAA Auto Wpns Bn, Self-propelled
866th AAA Auto Wpns Bn (-A, B, & C Btrys)
779th, 870th AAA Auto Wpns Bn, Semimobile
294th, 295th, 325th AAA Searchlight Bns
Hq & Hq Btry, 230th AAA Searchlight Bn
A Btry, 230th AAA Searchlight Bn
1st Plat, C Btry, 230th AAA Searchlight Bn
162nd AAA Opns Det
COAST ARTILLERY (HD)
Hq & Hq Btry, 144th CA Gp (155-mm Gun)
38th, 179th, 282nd CA Bns (155-mm Gun)
ENGINEER
1746th Engr Map Det
SIGNAL
3rd, 82nd Sig Construction Bns, Light
85th Sig Opn Bn
3181st Sig Serv Bn, Mobile
3161st Sig Serv Co
241st Sig Opn Co
Det, 585th Sig Depot Co
Det, 57th Sig Repair Co
529th Sig Opn Co
3385th Sig Serv Tm, Bn Hq
3373rd Sig Serv Co (SIAM)
Provisional Radio Int Co
8th, 108th, 110th, 111th, 274th Sig Radar Maintenance Units
279th Pigeon Combat Plat
MEDICAL
Hq Provisional Serv Unit
366th Orthopedic Tm
376th, 377th Surgical Tms
390th Neuro Surgical Tm, 341st
342nd, 343rd Surgical Dets
Hq & Hq Det, 80th Med Gp
Hq & Hq Dets, 96th, 153rd Med Bns
665th, 668th Clearing Cos
386th, 444th, 541st, 646th Collecting Cos
843rd, 847th Supply Tms
176th Malaria Control Unit
215th Malaria Survey Unit
MISCELLANEOUS
713th Armd Flame Thrower Bn
Air Delivery Sec, III Phib Corps
2nd Landing Force Air Support Control Unit
XXIV Corps
Hq XXIV Corps
CORPS TROOPS
Hq Co, XXIV Corps
XXIV Corps Military Police Plat
519th Military Police Bn (-Cos A & B)
235th Army Postal Unit
139th–142nd, 161st Photo Interp Tms
3231st Photo Unit
306th, 307th Hq Int Dets
L Hist Unit
29th Japanese Ord of Btl Tm
Base Censorship Det
224th Counter Intelligence Corps Det
Civ Correspondent Gp
MEDICAL
Hq & Hq Det, 71st Med Bn, Separate
594th QM Laundry Co (-3 Plats)
556th Ambulance Co, Separate, Motorized
394th Clearing Co, Separate
644th, 645th Collecting Cos
214th Malaria Survey Unit (FB)
2nd Supply Tm Type #4, 726th Med Det
377th Surgical Det
366th Orthopedic Tm (EB)
MILITARY GOVERNMENT UNITS
Three Military Govt Dets
1st–3rd G-10 Dispensaries (USN)
2nd G-6 Hospital (USN)
FIELD ARTILLERY
Hq & Hq Btry, XXIV Corps Arty
Hq & Hq Btry, 419th FA Gp
145th, 198th, 225th FA Bns ( 155-mm How)
287th FA Observation Bn
ENGINEER
Hq & Hq Co, 1176th Engr Construction Gp
47th, 1397th, 1398th Engr Construction Bns
Provisional Engr Topographic Plat
1445th Engr Searchlight Maintenance Co
968th Engr Maintenance Co
1088th Engr Depot Co (-1st & 2nd Plats)
1901st Engr Aviation Bn
QUARTERMASTER
Hq & Hq Det, 521st QM Gp
Hq & Hq Det, 187th QM Bn, Mobile
Hq & Hq Det, 492nd QM Bn
247th QM Depot Supply Co (-3rd Plat)
244th QM Depot Supply Co (-1st & 2nd Plats)
4342nd QM Serv Co (-2nd Plat)
3063rd QM Graves Reg Co (-3 Plats)
3008th QM Graves Reg Co (-4 Plats)
3754th QM Truck Co (-3 Plats)
SIGNAL
101st Sig Bn
MISCELLANEOUS
3rd Landing Force Air Support Control Unit
Det, Air Warning Sq #7
Hq & Hq CO, 504th Port Bn
88th Chem Mortar Bn (-Cos A & B)
866th AAA Auto Wpns Bn
III Amphibious Corps
CORPS TROOPS
Hq & Serv Bn, III Phib Corps
Sig Bn, III Phib Corps
Med Bn, III Phib Corps
Hq Btry, III Phib Corps Arty
11th Mil Transport Bn, Fleet Marine Force, Pacific
1st Provisional Military Police Bn, Fleet Marine Force, Pacific
Co A, 51st Military Police Bn (USA)
2nd, 3rd Corps Evacuation Hospitals
456th Amphibious Truck Co (USA)
1st Bomb Disposal Co (-2 Plats)
3rd Separate Radio Int Plat
1st Landing Force Air Support Control Unit
43-D Mobile Communication Unit
Det, Air Warning Sq
Two Military Govt Dets (USA)
12th G-10 Dispensary (USN)
1st G-6 Hospital (USN)
1st Laundry Co (-1st, 2nd, & 3rd Plats)
Hq Corps Shore Party
7th Field Depot
Hq Co
Guard Co
Sig Co
Engr Co
Ord Co
General Supply Co
Military Transport Co
Six Depot Cos
3rd, 12th Ammunition Cos
2nd Plat, 2nd Laundry Co
Fumigation & Bath Co
1st Provisional AAA Gp
2nd, 5th, 8th, 16th AAA Bns
2nd Provisional FA Gp, Hq Btry
1st, 3rd, 6th 155mm How Bns
7th, 8th, 9th 155mm Gun Bns
802nd Engr Aviation Bn (USA)
1st Separate Engr Bn
71st, 130th Naval Construction Bns (USN)
7th Infantry Division
ORGANIC UNITS
Hq 7th Inf Div
Special Troops, 7th Inf Div
Hq Co, 7th Inf Div
Military Police Plat, 7th Inf Div
Band, 7th Inf Div
7th QM Co
7th Cav Rn Tr (Mechanized)
7th Sig Co
707th Ord Light Maintenance Co
7th Med Bn
13th Engr (C) Bn
Hq & Hq Btry, Div Arty
31st, 48th, 49th, 57th FA Bns
17th, 32nd, 184th Inf Rgts
ATTACHED UNITS (AS OF L DAY)
Antiaircraft Artillery
502nd AAA Gun Bn
861st AAA Auto Wpns Bn
1st Plat, A Btry, 295th AAA Searchlight Bn
Det, Air Warning Sq #8
Armored
711th Tank Bn, Medium
718th, 536th Amph Tractor Bn
776th Amph Tank Bn
Chemical
91st Chem Co
Supply Tm, 1st Provisional Chem Det
Engineer
Hq & Hq Co, 1140th Engr (C) Gp
50th, 104th, 110th Engr (C) Bns
1st Plat, 1088th Engr Depot Co
Medical
69th Field Hospital
52nd, 66th Portable Surgical Hospitals
One Orthop Tm, 366th Med Serv Det
376th Surgical Tm
390th Neuro Surgical Tm
5th Museum & Med Arts Det
Ordnance
644th Ord Ammunition Co
Det, 196th Ord Depot Co
204th Ord Bomb Disposal Sq
284th Ord Heavy Maintenance Co, Tank
Quartermaster
40th QM War Dog Plat
3260th QM Serv Co
191st QM Gas Supply Co
1st & 3rd Plats, 3754th QM Truck Co
1st Sec, 2nd Plat, 4342nd QM Serv Co
472nd, 481st Amph Truck Cos
1st & 2nd Plats, 244th QM Depot Supply Co
2nd Plat, 3008th QM Graves Reg Co
Transportation
200th, 291st Port Cos
Miscellaneous
7th Counter Intelligence Corps Det
156th Photo Interp Tm
Base Censor Det
Civ Correspondent Gp
310th Hq Int Det
News Tm A, 1st Info & Hist Serv
Two Military Govt Dets
4th, 5th G-10 Dispensaries (USN)
32nd, 33rd Photo Assignment Units
Co A, 519th Military Police Bn
74th Joint Assault Sig Co
77th Infantry Division
ORGANIC UNITS
Hq 77th Inf Div
Special Troops, 77th Inf Div
Hq Co, 77th Inf Div
Military Police Plat, 77th Inf Div
Band, 77th inf Div
77th QM Co
77th Cav Recon Tr (Mechanized)
77th Sig Co
777th Ord Light Maintenance Co
302nd Med Bn
302nd Engr (C) Bn
Hq & Hq Btry, Div Arty
304th, 305th, 306th, 902nd FA Bns
305th, 306th, 307th Inf Regts
ATTACHED UNITS (AS OF L MINUS 5)
Antiaircraft Artillery
93rd AAA Gun Bn
204th Radar Maintenance Unit
7th AAA Auto Wpns Bn
2nd Plat, Btry A, 295th AAA Searchlight Bn
Armored
706th Tank Bn (Medium)
708th Amph Tank Bn
715th, 773rd Amph Tractor Bn
Chemical
Supply Tm, 1st Provisional Chem Det
Co A, 88th Chem Mortar Bn
Engineer
Hq & Hq Co, 1118th Engr (C) Gp
132nd, 233rd, 242nd Engr (C) Bns
Ordnance
693rd Ord Ammunition Co
92nd Bomb Disposal Sq
Det, 196th Ord Depot Co
Medical
36th Field Hospital
68th, 95th Portable Surgical Hospitals
Det, 75th Station Hospital
Quartermaster
43rd QM War Dog Plat
2nd Plat, 3063rd QM Graves Reg Co
477th, 828th Amph Truck Cos
203rd, 292nd Port Cos
Military Government
Three Military Govt Dets
6th, 7th G-10 Dispensaries (USN)
Field Artillery
Hq & Hq Btry, 420th FA Gp
531st, 43ad FA Bns (155-mm Gun)
Miscellaneous
36th Japanese Ord of Btl Tm
292nd Joint Assault Sig Co
Co B, 724th Military Police Bn
Provisional Radio Intelligence Co
Det 62nd, 7th Weather Sq
Det, Air Warning Sq #8
Amphibious Recon Bn, Fleet Marine, Force, Pacific (-Co B)
3234th Photo Assignment Unit
158th Photo Interp Tm
312th Hq Intelligence Det
Base Censor Det
77th Counter Intelligence Corps Det
Civ Correspondent Gp
News Team Co, 1st Info & Hist Serv
96th Infantry Division
ORGANIC UNITS
Hq, 96th Inf Div
Special Troops, 96th Inf Div
Hq Co, 96th Inf Div
Military Police Plat, 96th Inf Div
Band, 96th Inf Div
96th QM Co
96th Cav Recon Tr (Mechanized)
96th Sig Co
796th Ord Light Maintenance Co
321st Med Bn
321st Engr (C) Bn
Hq & Hq Btry, Div Arty
361st, 362nd, 363rd, 921st FA Bns
381st, 382nd, 383rd Inf Regts
ATTACHED UNITS (AS OF L DAY)
Antiaircraft Artillery
504th AAA Gun Bn
485th AAA Auto Wpns Bn
Btry C, 294th AAA Searchlight Bn (-1 Plat)
Det, Air Warning Sq #8
Armored
763rd Tank Bn
780th Amph Tk Bn
728th, 788th Amph Tractor Bn
Chemical
Supply Tm, 1st Provisional Chem Det
Co B, 88th Chem Mortar Bn
Engineer
Hq & Hq Co, 1122nd Engr (C) Gp
170th, 173rd, 174th Engr (C) Bns
2nd Plat, 1088th Engr Dep Co
Medical
31st Field Hospital
51st, 67th Portable Surgical Hospitals
Det, 233rd General Hospital
Ordnance
632nd Ord Ammunition Co
206th Ord Bomb Disposal Sq
Det, 196th Ord Depot Co
Quartermaster
41st QM War Dog Plat
3240th QM Serv Co
2nd Sec, 2nd Plat, 4342nd QM Serv Co
3rd Plat, 3008th QM Graves Reg Co
3rd Plat, 3063rd QM Graves Reg Co
474th, 827th Amph Truck Co
204th, 293rd Port Cos
Military Government
Two Military Govt Dets
8th, 9th G-10 Dispensaries (USN)
Miscellaneous
160th Photo Interp Tm
3235th Photo Assignment Unit
314th Hq Intelligence Det
38th Japanese Ord of Btl Tm
Base Censor Det
Civ Correspondent Gp
News Tm B, 1st Info & Hist Serv
96th Counter Intelligence Corps Det
Co C, 519th Military Police Bn
5934 Joint Assault Sig Co
27th Infantry Division
ORGANIC TROOPS
Hq 27th Inf Div
Special Troops, 27th Inf Div
Hq CO, 27th Inf Div
Military Police Plat, 27th Inf Div
Band, 27th Inf Div
27th Cav Rcn Tr (Mechanized)
27th QM Co
27th Sig Co
727th Ord Light Maintenance Co
102nd Med Bn
102nd Engr (C) Bn
Hq & Hq Btry, Div Arty
104th, 105th, 106th, 249th FA Bns
105th, 106th, 165th Inf Regts
ATTACHED UNITS (AS OF L PLUS 14)
Armored
193rd Tank Bn (Medium)
Engineer
Hq & Hq Co. 1165th Engr (C) Gp
34th, 152nd, 1341st Engr (C) Bns
Medical
68th Field Hospital
96th, 98th Portable Surgical Hospitals
219th Malaria Survey Unit
122nd Malaria Control Unit Ordnance
61st Ord Ammunition Co.
Quartermaster
45th QM War Dog Plat
1st Plat, 3063rd QM Graves Reg Co
Military Government
15th, 16th G-10 Dispensaries (USN)
One Military Govt Det
Miscellaneous
157th Photo Interp Tm
311th Hq Intelligence Det
Civ Correspondent Gp
35th Japanese Ord or Btl Tm
News Team E, 1st Info & Hist Serv
27th Counter Intelligence Corps Det
594th Joint Assault Sig Co
1st Marine Division
ORGANIC UNITS
Hq Bn, 1st Marine Div
1st Tank Bn
1st Pioneer Bn
1st Engr Bn
1st Serv Bn
1st Med Bn
1st Motor Transport Bn
11th Marines (Arty Regt)
1st, 5th, 7th Marines (Inf Regt)
ATTACHED UNITS (AS OF L DAY)
4th Joint Assault Sig Co
Det, Air Warning Sq
Co B, 51st Military Police Bn (USA)
3rd, 454th Amph Truck Cos
3rd Provisional Armd Amph Bn
1st, 8th Amph Tractor Bns
4th War Dog Plat
4th Provisional Rocket Det
3rd Marine Observation Sq
2nd Plat, 1st Bomb Disposal Co
2nd Plat, 1st Laundry Co
Two Military Govt Dets (USA)
17th, 18th G-10 Dispensaries (USN)
145th Naval Construction Bn (USN)
6th Marine Division
ORGANIC UNITS
Hq Bn, 6th Marine Div
6th Tank Bn
6th Pioneer Bn
6th Engr Bn
6th Serv Bn
6th Med Bn
6th Motor Transport Bn
15th Marines (Arty Regt)
4th, 22nd, 29th Marines (Inf Regts)
ATTACHED UNITS (AS OF L DAY)
6th Joint Assault Sig Co
Det, Air Warning Sq
Co C, 51st Military Police Bn (USA)
6th, 814th Amph Truck Cos
1st Armd Amph Tractor Bn
4th, 9th Amph Tractor Bns
1st War Dog Plat
5th Provisional Rocket Det
6th Marine Observation Sq
3rd Plat, 1st Bomb Disposal Co
3rd Plat, 1st Laundry Co
Two Military Govt Dets (USA)
10th, 11th G-10 Dispensaries (USN)
58th Naval Construction Bn
11th Spec Naval Construction Bn (-Hq Det & 3 Cos)
Tactical Air Force
ARMY
Hq & Hq Sq, 301st Fighter Wing
318th Fighter Gp
19th, 73rd, 3334 Fighter Sqs
548th Night Fighter Sq
413th Fighter Gp
1st, 21st, 34th Fighter Sqs
507th Fighter Gp
463rd, 464th, 465th Fighter Sqs
337th Air Serv Gp
Hq & Base Serv Sq
371st Engr Sq
577th Materiel Sq
364th Air Serv Gp
Hq & Base Serv Gp
612th Engr Sq
622nd Materiel Sq
557th Air Serv Gp
Hq & Base Serv Sq
987th Engr Sq
992nd Materiel Sq
342nd Station Complement Sq
460th Aviation Sq
Hq & Hq Sq, VII Bomber Command
11th Bomb Gp, Heavy
26th, 42nd, 98th, 431st Bomb Sqs
494th Bomb Gp, Heavy
864th, 865th, 866th, 867th Bomb Sqs
41st Bomb Gp, Medium
47th, 48th, 396th, 820th Bomb Sqs
13th Air Serv Gp
Hq & Base Serv Sq
489th Engr Sq
610th Materiel Sq
57th Air Serv Gp
Hq & Base Serv Sq
613th Engr Sq
619th Materiel Sq
389th Air Serv Gp
Hq & Base Serv Sq
593rd Engr Sq
594th Materiel Sq
MARINE
Hq Sq, Marine Air Wing-2
Marine Air GP-33
Hq Sq-33
Serv Sq-33
VMF-312, 322, 323 (Marine Fighter Sqs)
VMF-543 (Marine Fighter Sq, Night)
VMTB-232 (Marine Torpedo Bomber Sq)
Marine Air GP-31
Serv Sq-31
VMF-224, 311, 441 (Marine Fighter Sqs)
VMF-542 (Marine Fighter Sq, Night)
Marine Air Gp-14
Hq Sq-14
Serv Sq-14
VMF-212, 222, 223 (Marine Fighter Sqs)
Marine Air GP-22
Hq Sq-22
Serv Sq-22
VMF-113, 314, 422 (Marine Fighter Sqs),
VMF-533 (Marine Fighter Sq, Night),
Marine Observation Sq-7