A Table of Organization and Equipment (T/O & E) is a chart-like document published by the War Department prescribing the organic structure, manpower, and equipage of military units. This includes military organizations from divisional size and down, but also covers Headquarters of Corps and Armies. In fall of 1942, Organization and Equipment Tables were expressed in separate T/Os and T/Es. In order to provide a better coordination between Organization and Equipment, Tables were consolidated in August 1943 to form a T/O & E for each standard unit. The T/O & E provided the official designation of the unit, it prescribed the authorized numbers, ranks, and personnel qualifications, and also indicated the number and distribution of weapons, means of transportation, and major equipment items. Changes were frequently published and numbered in a sequence (as for Military Manuals), and when T/O & Es became outdated, they were simply superseded by new Tables using the same number but receiving a later date.Units operating under ‘special’ conditions were given T/O & Es with suffix S. Tentative T/O & Es were prepared for experimental purposes, and received suffix T (after the numbers), until the final organization and equipment tables were approved.

The following is a list of available medical Tables of Organisation & Equipment. This list is by no means exhaustive, and we would be most interested to learn of any other medical T/O & Es which may be added to this list. Please forward the necessary details to info@med-dept.com.

T/O 7-11 1 March, 1942	Medical Detachment – Armored Regiment (Armored Division)
T/O 7-12 1 March, 1942	Medical Detachment – Armored Infantry Regiment (Armored Division)
T/O 17-35 1 March, 1942	Medical Detachment – Armored Reconnaissance Battalion (Armored Division)
T/O 6-165 1 March, 1942	Medical Detachment – Armored Field Artillery Battalion (Armored Division)
T/O 9-65 1 March, 1942	Detachment – Maintenance Battalion (Armored Division)
T/O 10-35 1 March 1942	Medical Detachment – Supply Battalion (Armored Division)
T/O 5-215 1 March 1942	Medical Detachment – Armored Engineer Battalion (Armored Division)
T/O 10-15 1 April 1942	Medical Detachment – Quartermaster Battalion (Infantry Division)
T/O 10-165 1 April 1942	Medical Detachment – Quartermaster Laundry Battalion
T/O 10-175 1 April 1942	Medical Detachment – Quartermaster Sterilization Battalion
T/O 5-21 1 April 1942	Medical Detachment – Engineer General Service Regiment

T/O 5-35 1 April 1942	Medical Detachment – Engineer Battalion (Separate)
T/O 5-55 1 April 1942	Medical Detachment – Engineer Topographic Battalion (Army)
T/O 5-65 1 April 1942	Medical Detachment – Engineer Water Supply Battalion
T/O 5-95 1 April 1942	Medical Detachment – Engineer Camouflage Battalion (Army)
T/O 5-115 1 April 1942	Medical Detachment – Engineer Squadron
T/O 5-171 1 April 1942	Medical Detachment – Engineer Combat Regiment
T/O 5-185 1 April 1942	Medical Detachment – Engineer Topographic Battalion (GHQ)
T/O 5-235 1 April 1942	Medical Detachment – Engineer Mountain Battalion
T/O 5-275 1 April 1942	Medical Detachment – Engineer Heavy Pontoon Group
T/O 5-411 1 April 1942	Medical Detachment – Engineer Regiment (Aviation)
T/O 3-11 1 April 1942	Medical Detachment – Chemical Regiment (Motorized)
T/O 4-11 1 April 1942	Medical Detachment – Coast Artillery Regiment (Antiaircraft, Mobile)
T/O 4-31 1 April 1942	Medical Detachment – Coast Artillery Regiment (155m Gun)
T/O 4-41 1 April 1942	Medical Detachment – Coast Artillery Regiment (Railway Artillery)
T/O 4-51 1 April 1942	Medical Detachment – Coast Artillery Regiment (155mm Gun, Mobile)
T/O 4-61 1 April 1942	Medical Detachment – Coast Artillery Regiment (Harbor Defense, Type A)
T/O 4-71 1 April 1942	Medical Detachment – Coast Artillery Regiment (Harbor Defense, Type B)
T/O 4-81 1 April 1942	Medical Detachment – Coast Artillery Regiment (Harbor Defense, Type C)
T/O 4-111 1 April 1942	Medical Detachment – Coast Artillery Regiment (Antiaircraft, Semimobile)
T/O 4-151 1 April 1942	Medical Detachment – Coast Artillery Regiment (155mm Gun, Semimobile)
T/O 7-31 1 April 1942	Medical Detachment – Parachute Infantry Regiment (Airborne Division)
T/O 7-11 1 April 1942	Medical Detachment – Infantry Regiment (Infantry Division)
T/O 6-50 1 April 1942	Medical Detachment – Field Artillery Brigade
T/O 6-10 1 April 1942	Medical Detachment – Division Artillery (Infantry or Motorized Division)
T/O 6-31 1 April 1942	Medical Detachment – Field Artillery Regiment (155mm Howitzer, Truck-drawn)
T/O 6-21 1 April 1942	Medical Detachment – Artillery Regiment (105mm Howitzer, Truck-drawn)
T/O 6-75 1 April 1942	Medical Detachment – Field Artillery Observation Battalion
T/O 6-110 1 April 1942	Medical Detachment – Division Artillery (Cavalry Division)
T/O 2-71 1 April 1942	Medical Detachment – Cavalry Regiment (Mechanized)
T/O 6-45 1 April 1942	Medical Detachment – Field Artillery Battalion (75mm Gun, Horse-drawn)
T/O 6-150 1 April 1942	Medical Detachment – Division Artillery (Mountain Division)

T/O 8-21 1 April 1942	Medical Regiment
T/O 8-22 1 April 1942	Headquarters & Service Company – Medical Regiment
T/O 8-25 1 April 1942	Medical Battalion – Medical Regiment
T/O 8-67 1 April 1942	Collecting Company – Medical Battalion
T/O 8-28 1 April 1942	Clearing Company – Medical Regiment
T/O 8-85 1 April 1942	Medical Squadron (Cavalry Division)
T/O 8-86 1 April 1942	Headquarters Detachment – Medical Squadron
T/O 8-87 1 April 1942	Collecting Troop – Medical Squadron
T/O 8-88 1 April 1942	Clearing Troop – Medical Squadron
T/O 8-89 1 April 1942	Veterinary Troop – Medical Squadron
T/O 8-15 1 April 1942	Medical Battalion (Infantry Division)
T/O 8-16 1 April 1942	Headquarters & Headquarters Detachment – Medical Battalion (Infantry Division)
T/O 8-17 1 April 1942	Collecting Company – Medical Battalion (Infantry Division)
T/O 8-18 1 April 1942	Clearing Company – Medical Battalion (Infantry Division)
T/O 8-75 1 April 1942	Armored Medical Battalion (Armored Division)
T/O 8-76 1 April 1942	Headquarters & Headquarters Company – Armored Medical Battalion
T/O 8-77 1 April 1942	Armored Medical Company
T/O 8-135 1 April 1942	Medical Battalion (Mountain Division)
T/O 8-136 1 April 1942	Headquarters Detachment – Medical Battalion (Mountain Division)
T/O 8-137 1 April 1942	Collecting Company – Medical Battalion (Mountain Division)
T/O 8-138 1 April 1942	Clearing Company – Medical Battalion (Mountain Division)
T/O 8-139 1 April 1942	Veterinary Company – Medical Battalion (Mountain Division)
T/O 8-570 1 April 1942	Surgical Hospital
T/O 8-580 2 July 1942	Evacuation Hospital
T/O 8-581 1 April 1942	Evacuation Hospital (Motorized)
T/O 8-590 16 June 1942	Convalescent Hospital
T/O 8-661 6 June 1941	Medical Supply Depot (Army or COMZ)
T/O 8-611 1942	Medical Laboratory (Army or COMZ)
T/O 8-99 1 April 1942	Veterinary Company (Separate)
T/O 8-571 13 July 1942	Auxiliary Surgical Group
T/O 8-600-1 1 April 1942	Headquarters – Medical Concentration Center
T/O 8-125 11 August 1942	Gas Treatment Battalion
T/O 8-510 28 February 1942	Field Hospital
T/O 8-315 1 April 1942	Ambulance Battalion (Motorized)
T/O 8-455 19 November 1941	Air Ambulance Squadron
T/O 8-780 1 April 1942	Veterinary Evacuation Hospital
T/O 8-237 1 November 1940	Veterinary Convalescent Hospital
T/O 8-550 1 April 1942	General Hospital (COMZ)
T/O 8-540 1 April 1942	Hospital Center
T/O 8-560 22 July 1942	Station Hospital (COMZ)
T/O 8-520 1 April 1942	Hospital Train
T/O 8-537 1 April 1942	Hospital Ship Company
T/O 8-610 1 April 1942	General Laboratory
T/O 8-117 1 April 1942	Sanitary Company
T/O 44-275 August 1944	Medical Detachment – Antiaircraft Battalion (Airborne Division)
T/O 10-97 22 January 1944	Veterinary Troop – Quartermaster Remount Squadron
T/O 10-217 10 July 1943	Veterinary Detachment – Quartermaster Refrigeration Company (Fixed)
T/O 44-115 26 April 1943	Medical Detachment – Antiaircraft Artillery Gun Battalion (Semimobile)
T/O 44-75 15 June 1944	Medical Detachment – Antiaircraft Artillery Automatic Weapons Battalion (Semimobile)
T/O 44-125 April 1944	Medical Detachment – Antiaircraft Artillery Automatic Weapons Battalion (Semimobile)
T/O 44-135 May 1944	Medical Detachment – Antiaircraft Searchlight Battalion (Semimobile)
T/O 44-127 August 1943	Medical Detachment – Antiaircraft Machinegun Battery (Airborne Division)
T/O 44-225S May 1944	Medical Detachment – Antiaircraft Artillery Automatic Weapons Battalion (Air Transportable)
T/O 44-315 June 1943	Medical Detachment – Antiaircraft Balloon Battalion (Low Altitude)
T/O 44-325 June 1943	Medical Detachment – Antiaircraft Balloon Battalion (Very Low Altitude)
T/O 44-475T January 1944	Medical Detachment – Antiaircraft Artillery Machinegun Battalion (Light)
T/O & E 8-75 21 November 1944	Armored Medical Battalion
T/O & E 8-76 21 November 1944	Hq & Hq Company – Armored Medical Battalion
T/O & E 8-77 21 November 1944	Company – Armored Medical Battalion
T/O & E 8-317 5 December 1944	Medical Ambulance Company, Separate
T/O & E 8-18 14 February 1945	Clearing Company – Medical Battalion
T/O & E 8-28 4 September 1944	Medical Clearing Company, Separate
T/O & E 8-27 16 May 1945	Medical Collecting Company, Separate
T/O & E 8-17 3 September 1943	Collecting Company – Medical Battalion – Infantry Division
T/O & E 2-25 15 September 1943	Medical Detachment – Cavalry Reconnaissance Squadron (Mechanized)
T/O & E 8-37T 16 December 1944	Airborne Medical Company – Airborne Division