C
- C3I – Command, control, communications, and intelligence
- CAB – Combat aviation battalion
- CAD – Computer-assisted design
- CAG – Commander of the Air Group
- CAL – Canadian Arsenals Limited
- CAP – Civil air patrol (USAF civilian auxiliary)
- CAP – Combat air patrol
- CAP – Combustible augmented plasma
- CARRV – Challenger armoured repair and recovery vehicle
- CAS – Close air support
- CASEVAC – Casualty evacuation
- CAT/FCS – Command adjusted trajectory/fire-control system (US)
- CAT/LCV – Combined arms team/lightweight combat vehicle (US)
- CATT – Combined arms tactical trainer (UK)
- CATT-B – Component Advanced Technology TestBed (US)
- CAV – Composite armored vehicle (US)
- CAWS – Cannon Artillery Weapons Systems (US)
- CAX – Combined arms exercise
- CBR – Chemical, biological, radiological
- CBRN – Chemical, biological, radiological, nuclear
- CCC – Combustible cartridge case
- CCD – Charge-coupled device
- CCO – Close combat optic
- CCP – Computer control panel
- CCR – Crown copyright reserved
- CCTV – Closed-circuit television
- CCU – Central control unit
- CCV – Close combat vehicle
- CCV – Command and control vehicle (US)
- CCV-L – Close combat vehicle – light
- cd – candela
- CDA – Combat defensive action
- CDM – Coastal defence missile
- CDU – Command display unit
- CDU – Computer display unit
- CE – Chemical energy
- C/E – Crew/enlisted (enlisted aircrew member)
- CECOM – Communications-electronics command
- CEFO – Combat equipment fighting order (webbing contents)
- CENTCOM – Central command
- CENTO – Central Treaty Organisation or Baghdad Pact
- CEOI – Communications electronics operating instruction
- CEP – Circular error of probability
- CEPP – Controlled effect police projectile
- CET – Combat engineer tractor
- CEU – Computer electronics unit
- CEV – Combat engineer vehicle
- CF – Canadian Forces
- CF – Controlled fragmentation
- CFE – Conventional forces Europe
- CFV – Cavalry fighting vehicle (US)
- CG – Commanding general
- CGS – Crew gunnery simulator
- CHA – Cast homogeneous armour
- CHARM – Challenger chieftain armament
- CHIP – Challenger improvement programme
- CIFV – Composite infantry fighting vehicle
- CILAS – Compagnie Industrielle des Lasers
- CIS – Chartered Industries of Singapore
- CIS – Commonwealth of Independent States
- CITV – Commander's independent thermal viewer (US)
- CIWS – Close-in weapons system
- CLAMS – Clear lane marking system (US)
- CLASS – Computerised Laser Sight System
- CLAWS – Close combat light armor weapon system (US)
- CLGP – Cannon-launched guided projectile (US)
- CLOS – Command to line of sight
- CLU – Command launch unit
- CM – Colour-marking or "continue mission"
- CMS – Common missile system
- CMS – Compact modular sight
- CMT – Cadmium–mercury telluride
- CMV – Combat mobility vehicle (US)
- CNVD – Clip-on night vision device
- COB – Close of business
- CO – Commanding officer
- COG – Course over ground
- Comp – B Composition B
- COMVAT – Combat vehicles armament technology (US)
- COMZ – Communications zone
- COP – Combat out post
- COS – Chief of section
- COSCOM – Corps support command (US Army)
- CofS – Chief of staff
- COTAC – Conduite de Tir Automatique pour Char (tank automatic fire)
- COTS – Commercial-off-the-shelf
- COV – Counter obstacle vehicle (US)
- CP – Concrete-piercing
- CPR – Common practice round
- CPS – Cardinal points specification (UK)
- CPV – Command post vehicle
- CQB – Close quarters battle
- CQBW – Close-quarters battle weapon
- CR – Capability requirement
- CRISAT – Collaborative research into small arms technology
- CRM – Composite risk management (US)
- CROWS – Common Remotely Operated Weapon Station
- CRR – Carro de Reconhecimento Sobre Rodas (reconnaissance tracking scout car)
- CRT – Cathode ray tube
- CRU – Cable reel unit
- CS – Communications subsystem
- CS – Confined space
- CS (USAF) – Communications squadron
- CSB – Combat support boat
- CSF – Combined service forces
- CSI – computer-synthesised image
- CSS – Computer sighting system
- CSSD – Combat service support detachment
- CTA – Case telescoped ammunition
- CTD – Concept technology demonstrator
- CTI – Central tyre inflation
- CTIS – Central tyre inflation system
- CTO – Central Treaty Organisation or Baghdad Pact
- CTR – Close Target Recce
- CTRA – Carro de Transporte Sobre Rodas Anfibo (amphibious tracking scout car)
- CTT – Challenger training tank
- CV90 – Combat Vehicle 90
- CVAST – Combat vehicle armament system technology (US)
- CVR(T) – Combat vehicle reconnaissance (tracked) (UK)
- CVR(W) – Combat vehicle reconnaissance (wheeled) (UK)
- CVRDE – Combat vehicle research and development establishment (India)
- CVT – Controlled variable time
- CVTTS – Combat vehicle targeting system
- CW – Chemical warfare
- CWR – Continuous wave radar
- CWS – Cupola weapon station
Read more about this topic: Glossary Of Military Abbreviations