For military history, see D-F
U--Military science (General)
UA--Armies: Organization, distribution, military situation
UB--Military administration
UC--Maintenance and transportation
UD--Infantry
UE--Cavalry. Armor
UF--Artillery
UG--Military engineering. Air forces
UH--Other services
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
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
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
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
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
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
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.
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
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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