Library of Congress Classification Outline – Class U





Subclass U


U1‑900                                   Military science (General)

U21‑22.3                                      War.  Philosophy.  Military sociology

U27‑43                                         History of military science

U45                                              Historiography

U56‑59                                         Army clubs

U150‑155                                     Military planning

U161‑163                                     Strategy

U164‑167.5                                  Tactics

U168                                            Logistics

U250‑255                                     Maneuvers (combined arms)

U260                                            Joint operations.  Combined operations

U261                                            Amphibious warfare

U262                                            Commando tactics

U263‑264.5                                  Atomic warfare.  Atomic weapons

U300‑305                                     Artillery and rifle ranges

U310‑310.2                                  War games

U320‑325                                     Physical training of soldiers

U400‑714                                     Military education and training

U750‑773                                     Military life, manners and customs, antiquities, etc.

U799‑897                                     History of arms and armor


Subclass UA


UA10‑997                               Armies: Organization, distribution, military situation

UA21‑885                                     By region or country

UA910‑915                                   Mobilization

UA920‑925                                   Plans for attack and defense

UA926‑929                                   Civil defense

UA929.5‑929.95                            War damage in industry.  Industrial defense

UA940‑945                                   Military communication

UA950‑979                                   Routes of travel.  Distances

UA985‑997                                   Military geography


Subclass UB


UB1‑900                                 Military administration

UB160‑165                                    Records, returns, muster rolls, etc.

UB170‑175                                    Adjutant generals’ offices

UB180‑197                                    Civilian personnel departments

UB250‑271                                    Intelligence

UB273‑274                                    Sabotage

UB275‑277                                    Psychological warfare.  Propaganda

UB320‑338                                    Enlistment, recruiting, etc.


UB340‑345                                    Compulsory service.  Conscription and exemption

UB356‑369.5                                 Provision for veterans

UB370‑375                                    Military pensions, etc.

UB380‑385                                    Soldiers’ and sailors’ homes

UB407‑409                                    Warrant officers.  Noncommissioned officers

UB410‑415                                    Officers

UB416‑419                                    Minorities, women, etc. in armed forces

UB420‑425                                    Furloughs

UB440‑449.5                                 Retired military personnel


Subclass UC


UC10‑780                               Maintenance and transportation

UC20‑258                                     Organization of the service.  By region or country

UC260‑267                                   Supplies and stores

UC270‑360                                   Transportation

UC400‑440                                   Barracks.  Quarters.  Camps

UC460‑535                                   Clothing and equipment

UC540‑585                                   Equipage.  Field kits

UC600‑695                                   Horses.  Mules.  Remount service

UC700‑780                                   Subsistence


Subclass UD


UD1‑495                                 Infantry

UD157‑302                                   Tactics.  Maneuvers.  Drill regulations

UD320‑325                                   Manual of arms

UD330‑335                                   Firing.  Military sharpshooting

UD340‑345                                   Bayonet drill

UD380‑425                                   Small arms.  Swords, etc.

UD450‑455                                   Mounted infantry

UD460‑464                                   Mountain troops

UD470‑475                                   Ski troops

UD480‑485                                   Airborne troops.  Parachute troops

UD490‑495                                   Airmobile operations


Subclass UE


UE1‑500                                 Cavalry.  Armor

Including horse cavalry, armored cavalry, mechanized cavalry

UE144‑145                                    Horse cavalry

UE147                                          Armored cavalry

UE157‑302                                    Tactics.  Maneuvers.  Drill regulations

UE420‑425                                    Cavalry sword exercises

UE460‑475                                    Horses


Subclass UF


UF1‑910                                 Artillery

UF157‑302                                    Tactics.  Maneuvers.  Drill regulations


UF400‑405                                    Field artillery

UF450‑455                                    Seacoast artillery

UF460‑465                                    Siege artillery

UF470‑475                                    Howitzer artillery.  Mortar batteries

UF480‑485                                    Garrison artillery

UF500‑515                                    Weapons systems

UF520‑537                                    Ordnance and small arms

UF540‑545                                    Arsenals, magazines, armories, etc.

UF560‑780                                    Ordnance material (Ordnance proper)

UF820‑830                                    Ballistics.  Velocities and motions of projectiles

UF848‑856                                    Artillery instruments.  Fire control, etc.


Subclass UG


UG1‑620                                 Military engineering

UG160‑302                                   Tactics and regulations

UG335                                          Bridges

UG340                                          Tunnels

UG360‑390                                   Field engineering

UG400‑442                                   Fortification

UG443‑449                                   Attack and defense.  Siege warfare

UG470‑474                                  Military surveying, topography, and  mapping

UG490                                          Land mines, etc.

UG500‑565                                   Technical troops and other special corps

UG570‑582                                   Military signaling

UG590‑613.5                                Military telegraphy and telephony

UG614‑614.5                                Military electric lighting

UG615‑620                                   Military motor vehicles

UG622‑1435                           Air forces.  Air warfare

UG633‑635                                   By region or country

UG637‑639                                   Education and training

UG640‑645                                   Military aeronautical research

UG700‑705                                   Tactics

UG730‑735                                   Air defenses

UG760‑765                                   Aerial reconnaissance

UG770‑1045                                Organization.  Personnel management

UG1097                                        Air bases

UG1100‑1435                                Equipment and supplies

UG1500‑1530                          Military astronautics.  Space warfare.  Space surveillance

UG1523‑1525                                By region or country


Subclass UH


UH20‑910                               Other services

UH20‑25                                       Chaplains

UH201‑515                                   Medical and sanitary services

UH520‑(560)                                 Care of sick and wounded.  Relief societies

UH600‑629.5                                Military hygiene and sanitation

UH700‑705                                   Public relations.  Press.  War correspondents

UH750‑769                                   Military social work.  Social welfare services


UH800‑910                                   Recreation and information services

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