Naval History and Heritage Command
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U.S. Naval Abbreviations
A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
--C--
Note: Where the same abbreviation has more than one meaning, the several meanings have been arranged alphabetically. Abbreviations preceded by an asterisk (*), other than Navy numbers, may never be used singly; those preceded by the symbol for number (#) are the Bureau of Personnel Condensation Code for use in dispatch orders to personnel.
(C) -- Caretaker Status
C -- Center--as NATTC (Naval Air Technical Training Center)
C -- Central
C -- Cessna Aircraft Corporation (manufacturer's symbol)
C -- Chief; e.g., CMUS (Chief Musician)
C -- Class; used with number for Navy rating as: 1c (first class)
C -- Commandant (USCG)
C -- Commander; as: CNAB (Commander Naval Air Bases)
C -- Commissary (USMC)
C -- Confidential Dispatch
C -- Culver Aircraft Corporation (manufacturer's symbol)
C -- Curtiss-Wright Corporation (manufacturer's symbol)
C -- Freighter Aircraft
C -- USNR officer designation for General Service, Communications Duties. Formerly (C).
CA -- Assistant Commandant (USCG)
CA -- Civil Authorities
CA -- Combat Aircrew (man)
CA -- Convening Authority
CA -- Heavy Cruiser
CAA -- Civil Aeronautics Authority
CAAF -- Combined Allied Air Forces
CAA-WTS -- Civil Aviation Authority--War Training Service
CAB -- Civil Aeronautics Board
CAC -- Coast Artillery Corps (Army)
CAC -- Combat Air Crew
CAC -- Commander Air Center
CACW -- Chinese-American Composite Wing
CAD -- Civil Affairs Division (Army)
CAdC -- Combined Administrative Committee
CADRC -- Combined Air Documents Research Center
CAer -- Chief Aerographer
CAerM -- Chief Aerographer's Mate
CAF -- Clerical, Administrative and Fiscal (Civil Service employees designation)
CAFAC -- Commander All Forces, Aruba-Curacao
CAFAF -- Commander Amphibious Force Atlantic Fleet
CAFO -- Confidential Admiralty Fleet Order (GB)
CAFT -- Consolidated Advance Field Teams
Cal -- Caliber
CALF -- Combined Allied Land Forces
CALIF -- California
CAM -- Administrative Management Division (USCG)
CAMDI -- Confidential Admiralty merchant Ship Defense Instructions (GB)
"Campbell" -- Navy crash boat equipped with television
CAMSI -- Canadian, American Merchant Shipping Instructions
CAMSI -- Confidential Admiralty Merchant Shipping Instructions
*CAN -- Canada, Canadian
CANCEL -- Vessels on which construction was stopped (Code)
CANCON -- Canadian Control System (for convoys in Canadian Coastal Zone)
CandR -- Construction and Repair (USCG)
CandR -- Convoy and Routing
CANF -- Combined Allied Naval Forces
CANFSWPA -- Combined Allied Naval Forces Southwest Pacific Area
CANFSWPAOpPlan -- Combined Allied Naval Forces Southwest Pacific Ocean Area Operation Plan
CAO -- Civil Affairs Officer
CAP -- Catapult and Arresting-Gear Pool
CAP -- Chief Aviation Pilot
CAP -- Civil Air Patrol
CAP -- Combat Air Patrol
CAP -- Current Assessment Plan
CAPCP -- Civil Air Patrol Coastal Patrol
CAPT -- Captain
CaptLB -- Captain, Landing Barges
CAPUC -- Coordinating Area Production Urgency Committee
*CAR -- Carrier
CAR -- Chief Airship Rigger
CarAirGroup -- Carrier Air Group
Carb -- Carburetor
CarDiv -- Carrier Division
CARE -- Cooperative for American Remittances to Europe
*CARIB -- Caribbean
CaribSeaFron -- Caribbean Sea Frontier
Carp -- Carpenter
CarPac -- Carriers, Pacific Fleet
"Carpet" -- Electronic jammer (radar)
"Carpet Sweeper" -- Electronic transceiver (radar)
CarTaskFor -- Carrier Task Force
CarTransRon -- Carrier Transport Squadron
CARTU -- Combat Aircrew Refresher Training Unit
CAS -- Chief of Air Staff (USMC)
CAS -- Civil Affairs Section
CASCP -- Caribbean Area Small Craft Project
CASCU -- Commander Aircraft Support Control Unit
CASD -- Carrier Aircraft Service Detachment (USMC)
CASD -- Carrier Aircraft Service Division
CASDIV -- Carrier Aircraft Service Division
Cast -- "C" in the phonetic alphabet; now obsolete and replaced by "Charlie"
CASU -- Carrier Aircraft Service Unit
CASU (F) -- Combat Aircraft Service Unit
CASUM -- Civil Affairs Summary
CASWO -- Confidential and Secret Weekly Orders (Naval Air Stations)
"Catalina" -- See PB2B-#, PBY-#
CATCUSAF -- Commander Amphibious Training Command United States Atlantic Fleet
CATS -- Civil Affairs Training School
CATU -- Combat Aircrew Training Unit
CAVU -- Ceiling and Visibility Unlimited
"Caydet" -- N2S; single-engine Boeing, Wichita (Stearman) Navy training, primary
CAZ -- Planned Auxiliary, Conversion (Cruiser)
CB -- Chief Boilermaker
CB -- Confidential
CB -- Construction Battalion ("Seabees")
CB -- Cooper Bessemer (ship engines)
CB -- Cumulonimbus
CB -- Large Cruiser
CBALS -- Carrier Borne Air Liaison Section
CBC -- Contraband Control
CBD -- Board of Review, Discharges and Dismissals (USCG)
CBD -- Construction Battalion Detachment
CBgmstr -- Chief Buglemaster
CBI -- China-Burma-India (Theater of Operations)
CBLO -- Chief Bombardment Liaison Officer
CBLS -- Carrier Borne Air Liaison Section
CBM -- Chief Boatswain's Mate
CBMA -- Chief Boatswain's Mate Acting
CBMCBB -- Chief Boatswain's Mate, Construction Battalion, Boatswain
CBMCBS -- Chief Boatswain's Mate Construction Battalion, Stevedore
CBmkr -- Chief Boilermaker (USCG)
CBMM -- Chief Boatswain's Mate A (Master-at-Arms)
CBMSRC -- Chief Boatswain's Mate, Ship Repair, Crane Operator
CBMSRR -- Chief Boatswain's Mate, Ship Repair, Rigger
CBMSRS -- Chief Boatswain's Mate, Ship Repair, Canvasman
CBMU -- Construction Battalion Maintenance Unit
#CBN -- Construction Battalion
#CBNDET -- Construction Battalion Detachment
CBO -- Board of Review, Officer Retirements (USCG)
CBO -- Coding Board Officer
CBR -- Budget and Requirements Division (USCG)
CBRD -- Construction Battalion Replacement Depot
CBSR -- Chief Boilermaker, Ship Repair
CBT -- Clinical laboratory Technician
CC -- Combat Command (Army)
CC -- Cyanogen chloride
CC -- USN officer designation for Construction Corps, USN
CCA -- Cash Clothing Allowance (quarterly)
CCAC -- Combined Civil Affairs Committee
CCAC/L -- Combined Civil Affairs Committee, London Subcommittee
CCAC/S -- Combined Civil Affairs Committee, Supply Subcommittee
CCAO -- Chief Civil Affairs Officer (US & GB)
CCATNA -- Combined Committee on Air Training in North America
CCB -- Combined Communications Board
CCB -- Contraband Control Base
CCBP -- Combined Communications Board Publications
CCC -- Chief Cable Censor
CCC -- Civilian Conservation Corps
CCC -- Combined Coordinating Committee (CCB)
CCC -- Commodity Credit Corporation
CCFET -- Central Commissioning Detail
CCF -- Captain, Coastal Forces
CCFET -- Captain, Coastal Forces, Eastern Theatre
CCGD -- Commander Coast Guard District; e.g., CCGDTHREE
CCk -- Chief Cook
CCk(B) -- Chief Cook (Baker)
CCk(C) -- Chief Cook (Commissary)
CCL -- Communications Circular Letter
CCM -- Chief Carpenter's Mate
CCM -- Combined Cipher Machine
CCM -- Combined Coding Machine
CCMCBB -- Chief Carpenter's Mate, Construction Battalion, Builder
CCMCBD -- Chief Carpenter's Mate, Construction Battalion, Draftsman
CCMCBE -- Chief Carpenter's Mate, Construction Battalion, Excavation Foreman
CCMCBS -- Chief Carpenter's Mate, Construction Battalion, Surveyor
CCMSRB -- Chief Carpenter's Mate, Ship Repair, Boatbuilder--Wood
CCMSRJ -- Chief Carpenter's Mate, Ship Repair, Joiner
CCO -- Convoy Control Officer
CCS -- Chief Commissary Steward
CCS -- Combined Chiefs of Staff
CCSC -- Civil Affairs Staff Center (Wimbledon, England)
CCSF -- Commander Caribbean Sea Frontier
CCSTD -- Chief Commissary Steward
CCT -- Communications Control Team
CC-V(S) -- USNR designation for Engineer Officers, commissioned and warrant, including carpenters, qualified for specialist duties. Classification abolished in 1944 and replaced by S(E) classification.
CCZA -- Canadian Coastal Zone Atlantic
CCZP -- Canadian Coastal Zone Pacific
CD -- Coastal Defense (USMC)
CD -- Confidential Document
CD -- Conning Director
CD -- USNR officer designation. See C and D. Formerly (CD)
CDC -- Caribbean Defense Command(er)
CDD -- Certificate of Disability for Discharge (Army)
CDN -- USNR officer designation. See C, D and N. Formerly (CD)-N
CDO -- Command Duty Officer
Cdo -- Commando
CDR -- Commander
CDR -- USNR officer designation. See C, D, and R. Formerly (CD)-R
CDRE -- Commodore
CdreIC -- Commodore-in-Charge (GB)
CdrelcbPortsmouth -- Commodore Commanding Landing Craft Bases, Portsmouth Command (GB)
CdreSupt -- Commodore Superintendent (GB)
CdrF -- Command, Flying (GB)
CdrSBU -- Commander, Special Boats Units (GB)
CDS -- Central Distribution System (publications)
CDS -- Commander, Destroyer Squadron
CDT -- Cadet (USCG)
CDT -- Commandant
CDT -- USNR officer designation. See C, D, and T. Formerly (CD)-T.
CDX -- USNR officer designation. See C, D, and X. Formerly (CD)-X.
CE -- Chief Engineer
CE -- Civil Engineer
CE -- Combustion Engineering
CE -- Corps of Engineers (Army)
CEC -- Central Economic Committee
CEC -- USN officer designation for Civil Engineer Corps, USN
CECR -- USNR officer designation for General Service, Civil Engineering Corps. Formerly CEC.
CECS -- USNR officer designation for Cargo Handling Specialists. Formerly (CEC)S.
CEC(S1) -- USN officer designation for Special Service, Special CEC duties as Mechanical Engineer.
CEC(S2) -- USN officer designation for Special Service, Special CEC duties as Electrical Engineer.
CEC(S3) -- USN officer designation for Special Service, Special CEC duties as Cargo Handling Specialist.
CEC-V(S) -- USNR officer designation for Civil Engineer Officers, commissioned and warrant, including carpenters, qualified for specialist duties. This classification was abolished in September 1944 and replaced by one of the following: CEC(S), CEC(S1), CEC(S2) or CEC(S3).
CEF -- Captain (Commanding) Escort Forces
CEF -- Corps Expeditionaire Français
CEM -- Chief Electrician's Mate
CEMCBC -- Chief Electrician's Mate, Construction Battalion, Communications
CEMCBD -- Chief Electrician's Mate, Construction Battalion, Draftsman
CEMCBG -- Chief Electrician's Mate, Construction Battalion, General
CEMCBL -- Chief Electrician's Mate, Construction Battalion, Line and Station
CEMSRG -- Chief Electrician's Mate, Ship Repair, General Electrician
CEMSRS -- Chief Electrician's Mate, Ship Repair, Shop Electrician
CEMSRT -- Chief Electrician's Mate, Ship Repair, I.C. Repairman
*CEN -- Center, Central
CenCATS -- Central Pacific Combat Air Transport Service (joint Army, Navy and Marine Corps) (later TAG)
CenDraft -- Central Drafting Officer (Navy Yard, N.Y.)
CenPac -- Central Pacific Area
CenPacFor -- Central Pacific Forces
CentCom -- Central Pacific Communications Instructions
CentPacBaCom -- Central pacific Base Command
CEO -- Casualty Evacuation Officer
CEOinC -- Civil Engineer, Officer-in-Charge
CESF -- Commander Eastern Sea Frontier
CEV -- Convoy Escort Vessel
CEWA -- Combined Economic Warfare Agencies
CF -- Carry Forward
CF -- Coastal Frontier (Army)
CF -- Flying Deck Cruiser
CFC -- Chief Fire Controlman
CFC -- Controlled Force Circulation (boilers)
CFCO -- Chief Fire Controlman, Operator
CFCS -- Chief Fire Controlman, Submarines
CFLN -- Comité Français Liberation Nationale
CFO -- Connection Fitting Out (name of ship)
CFO -- Physically on board for the commissioning and fitting out of a specified ship or activity
CG -- Coast Guard
CG -- Commanding General (USMC)
CG -- Phosgene
CGA -- Coast Guard Academy
CGAB -- Coast Guard Air Base
CGAS -- Coast Guard Air Station
CGC -- Coast Guard Cutter
CGD -- Coast Guard District
CGM -- Chief Gunner's Mate
CGMB -- Commanding General, Marine Base
CGMCBG -- Chief Gunner's Mate, Construction Battalion, Armorer
CGMCBP -- Chief Gunner's Mate, Construction Battalion, Powderman
CGOB -- Coast Guard Operating Base
CGOS -- Combat Gunnery Officers School (Army Air Forces)
C&GS -- Coast and Geodetic Survey
C&GS -- Command and General Staff (Army)
CGTS -- Coast Guard Training Station
CGYD -- Coast Guard Yard
CH -- Charleston (Navy Yard)
*CH -- Chief of the ---; e.g., ChBuOrd (Chief of the Bureau of Ordnance)
ChAer -- Chief Aerographer
Chap -- Chapter
Char -- Navy Yard, Charleston
Charlie -- "C" in the phonetic alphabet; formerly "Cast"
ChasGrp -- Charleston Group
Chasn -- Charleston, South Carolina
ChBosn -- Chief Boatswain
ChC -- USN officer designation for Chaplain Corps, USN
ChCarp -- Chief Carpenter
ChCk -- Chief Cook
CHCP -- USNR officer designation for probationary commission in Reserve Chaplain Corps. Formerly CHC(P).
CHCR -- USNR officer designation for General Service, Chaplain Corps. Formerly CHC.
CHCS -- USNR officer designation for Special Service, Chaplain Corps. Formerly CHC(S).
ChC-V(G) -- USNR officer designation for Chaplain qualified for general detail afloat or ashore. This classification was abolished in September 1944 and replaced by ChC or ChC(S).
ChC-V(P) -- USNR officer designation for seniors in theological seminaries commissioned as ensigns in probationary status and, after qualification and transfer to ChC-V(G), available for general detail ashore or afloat. This classification was abolished in September 1944 and replaced by ChC(P).
ChC-V(S) -- USNR officer designation for Chaplains qualified for specialist duties. This classification was abolished in September 1944 and replaced by ChC or ChC(S).
ChElec -- Chief Electrician
ChemBomb -- Chemical Bomb
"Cherry Blossom" -- See "Oka"
ChGun -- Chief Gunner
ChMach -- Chief Machinist
ChNavAirShipTra -- Chief of Naval Airship Training
ChNavMis -- Chief, U.S. Naval Mission to (Country)
CHOP -- Change of Operational Control; dividing line in North and South Atlantic Oceans for American and British control of convoy and ship movements
CHORI -- Chief of Office of Research and Inventions
ChPClk -- Chief Pay Clerk
ChPhar -- Chief Pharmacist
ChPhot -- Chief Photographer
CHQ -- Corps Headquarters (Army)
CHQ -- Corps Headquarters Company (Army)
ChQmClk -- Chief Quartermaster Clerk (USCG)
ChREle -- Chief Radio Electrician
ChSClk -- Chief Ship's Clerk
CHT -- Chemist
ChTorp -- Chief Torpedoman
CHU -- Cable, Radio Censorship Office
CI -- Cirrus
CI -- Cost Inspector; also NCI (Naval Cost Inspector)
CIAA -- Coordinator of Inter-American Affairs
CIC -- Combat Information Center
CIC -- Combined Intelligence Committee
CIC -- Counter Intelligence Corps (G-2, Army)
CIG -- Central Intelligence Group
CIGS -- Chief of Imperial General Staff
CIMS -- Communications Instructions for Merchant Ships
*CinC -- Commander-in-Chief
CinCAF -- Commander-in-Chief, Allied Forces
CinCAF -- Commander-in-Chief, US Asiatic Fleet
CinCAFPac -- Commander-in-Chief, US Army Forces in the Pacific
CinCAL -- Commander-in-Chief, Alaska
CINCA&WI -- Commander-in-Chief, Atlantic and West Indies
CinCBPF -- Commander-in-Chief, British Pacific Fleet
CinCEI -- Commander-in-Chief, British East Indies Station
CincFE -- Commander-in-Chief, Far East
CinCLANT -- Commander-in-Chief, US Atlantic Fleet
CinCLantFlt -- Commander-in-Chief, US Atlantic Fleet
CinCMed -- Commander-in-Chief, Mediterranean
CinCNedE -- Commander-in-Chief, Netherlands Forces in the East
CinCPac -- Commander-in-Chief, US Pacific Fleet
CinCPac-CinCPoa -- Commander-in-Chief, US Pacific Fleet and Pacific Ocean Areas
CinCPacFlt -- Commander-in-Chief, US Pacific Fleet
CinCPacHedPearl -- Commander-in-Chief, US Pacific Fleet Headquarters, Pearl Harbor
CinCPOA -- Commander-in-Chief, Pacific Ocean Areas
CinCPoaHedPearl -- Commander-in-Chief, Pacific Ocean Areas Headquarters, Pearl Harbor
CinCSA -- Commander-in-Chief, South Atlantic Station (GB)
CinCUS -- Commander-in-Chief, US Fleet (now, CominCh)
CIO -- Combat Intelligence Officer
CIOS -- Combined Intelligence Objectives Sub-committee
CIOS -- Combined Intelligence Operations Section
CIPC -- Combined Intelligence Priorities Committee (US, GB) (London)
"Circus" -- Mobile torpedo field unit mounted on tractors and trailers and out-fitted with air compressors, tools, testing gear and a small crew of trained personnel
CIRES -- Communication Instructions for Reporting Enemy Sightings
CIS -- Cost Inspection Service
CIT -- California Institute of Technology
*CIT -- Citation
CITEJA -- Comité Internationale d' Experts Juridques Aeriens
CIU -- Central Interpretation Unit (British Air Ministry)
CIVCLO -- Civilian Clothing
CJTF -- Commander Joint Task Force
CK -- Check
Ck -- Cook
Ck(B) -- Cook (Baker)
Ck(C) -- Cook (Commissary)
CKD -- Checked
CKT -- Circuit
C/L -- Circular Letter
CL -- Light Cruiser
CL -- USNR officer designation for Limited General Service, Communication Duties. Formerly (C)L.
CL(AA) -- Light Cruiser (Anti-Aircraft)
CLAC -- Combined Liberated Areas Committee
Class -- Classification
Cler -- Clerical
"Clipper" -- See B-314
CLN -- USNR officer designation. See CL and N. Formerly (C)L-N.
CLR -- USNR officer designation. See CL and R. Formerly (C)L-R.
CLT -- Clerical Technician, Medical
CLT -- USNR officer designation. See CL and T. Formerly (C)L-T.
CLTE -- Commissioned loss to enlisted status (revocation of appointment)
CLUSA -- Continental Limits, United States of America
CLX -- USNR officer designation. See CL and X. Formerly (C)L-X.
CM -- Carpenter's Mate
CM -- Centimetres
CM -- Chief Metalsmith
C&M (also CM) -- Construction and Machinery
CM -- Controlled Mine Field
CM -- Countermeasure
CM -- Court Martial
CM -- Mine Layer
CMaM -- Chief Mailman
CMC -- Coastal Mine Layer
CMC -- Combined Meteorological Committee
CMC -- Commandant of the Marine Corps
CMC -- Merchant Marine Council (USCG)
CMCB -- Carpenter's Mate, Construction Battalion
CMCBB -- Carpenter's Mate, Construction Battalion, Builder
CMCBD -- Carpenter's Mate, Construction Battalion, Draftsman
CMCBE -- Carpenter's Mate, Construction Battalion, Excavation Foreman
CM&D -- Counter Measures and Deception (radar) (small)
CMG -- Chief Marine Gunner
CMH -- Congressional Medal of Honor
CMl -- Chief Moulder
CML2N -- Navy midget rocket engine
CMM -- Chief Machinist's Mate
CMMCBE -- Chief Machinist's Mate, Construction Battalion, Equipment Operation
CMMG -- Chief Machinist's Mate, Industrial Gas Generating Mechanic
CMMR -- Chief Machinist's Mate, Refrigeration
CMMS -- Chief Machinist's Mate, Shop
CMMSRO -- Chief Machinist's Mate, Ship Repair, Outside Machinist C
CMn -- Chief Mineman
CMO -- Controlled Materials Officer
CMO -- Court Martial Orders
CMoMM -- Chief Motor Machinist's Mate
CMoMSRD -- Chief Motor Machinist's Mate, Ship Repair, Diesel Engineering Mechanic
CMoMSRG -- Chief Motor Machinist's Mate, Ship Repair, Gasoline Engineering Mechanic
CMP -- Controlled Materials Plan (of the War Production Board)
CMP -- Corps of Military Police (Army)
CMSR -- Carpenter's Mate, Ship Repair
CMSRB -- Carpenter's Mate, Ship Repair, Boatbuilder-Wood
CMSRB -- Chief Metalsmith, Ship Repair, Blacksmith
CMSRC -- Carpenter's Mate, Ship Repair, Carpenter
CMSRC -- Chief Metalsmith, Ship Repair, Coppersmith
CMSRJ -- Carpenter's Mate, Ship Repair, Joiner
CMSRK -- Carpenter's Mate, Ship Repair, Caulker-Boat
CMSRN -- Carpenter's Mate, Ship Repair, Cement Worker-Concrete
CMSRS -- Chief Metalsmith, Ship Repair, Sheet Metal Worker
CMSRS -- Carpenter's Mate, Ship Repair, Shipwright
CMT -- Commissary
CMT -- Commissary Technician, Medical
CMTC -- Civilian Military Training Camp
CMTC -- Combined Military Transportation Committee
CMus -- Chief Musician
CN -- Chloracetophenone
CN -- Cuban Navy
CN -- USNR officer designation. See C and N. Formerly (C)-N.
CNA -- Canadian Northwest Atlantic (Area)
CNA -- Chief of Naval Air
CNAAdTra -- Chief of Naval Air Advanced Training (formerly CNAOpTra)
CNAB -- Commander Naval Air Base
CNABTra -- Chief of Naval Air Basic Training
CNAIntermTra -- Chief of Naval Air Intermediate Training (now CNABTra)
CNAIT -- Chief of Naval Air Intermediate Training
CNAOpTra -- Chief of Naval Air Operational Training (now CNAAdTra)
CNAOT -- Chief of Naval Air Operational Training
CNAPrimTra -- Chief of Naval Air Primary Training (now CNARFSTra)
CNAPT -- Chief of Naval Air Primary Training
CNAResTra -- Chief of Naval Air Reserve Training
CNAT -- Chief of Naval Air Training
CNATE -- Chief of Naval Airship Training and Experimentation
CNATec(LTA) -- Commander, Naval Air Technical Training (Lighter Than Air)
CNATechTra -- Chief of Naval Air Technical Training
CNATra -- Chief of Naval Air Training
CNB -- Commander, Naval Base
CNB Ottawa -- Canadian Naval Board, Ottawa
CNC -- Chief Naval Censor
CNC -- Chief of Naval Communications (formerly DNC)
CNDO -- Chief Navy Disbursing Officer
CNF -- Commander Naval Forces
CNG -- Commander Northern Group
CNI -- Chief of Naval Intelligence
CNMO -- Canadian Naval Mission Overseas
CNO -- Chief of Naval Operations (also OpNav)
CNOB -- Commander, Naval Operating Base
CNR -- Change(s) to Navy Regulations
CNS -- Canadian Naval Service
CNTS -- Chief, Naval Transportation Service; formerly DNTS
*CO -- Coast(al)
CO -- Columbia River
CO -- Combined Operations
CO -- Commanding Officer
CO -- Communications Officer
Co -- Company
COAC -- Commanding Officer, Atlantic Coast
COAirEvacRon -- Commanding Officer, Air Evacuation Squadron
COB -- Committee of Combined Boards
CoC -- Chief of Chaplains
COCEEE -- Committee on Captured Enemy Electronics Equipment
CODAN -- Coded weather analysis
CODIS -- Completed discharge
CODCAVE -- Committee on Decentralization of Controls after V-E Day (War Production Board)
COEV -- Canadian Ocean Escort Vessel
Cof--- -- Chief of --- (Army)
CofG -- Convenience of the Government
COFRON -- Coastal Frontier (USCG)
CofS -- Chief of Staff (Army)
CofT -- Chief of Transportation (Army)
COGARD -- Coast Guard
COHQ -- Combined Operations Headquarters
COIC -- Combined Operational Intelligence Center
*COL -- College
Col -- Colonel
COLanForASCU -- Commanding Officer, Landing Force Air Support Control Unit
COLO -- Colorado
COLOD -- "Completed Loading"
Com -- Commandant; e.g., ComOne (Commandant, 1st Naval District
*COM -- Commander; e.g., ComAirPac (Commander Air Forces, Pacific)
COM -- Commissioned Officers Mess
Com -- Common
Com -- Communication
ComAir -- Commander Aircraft
ComAir -- Commander Air Forces
ComAT -- Commodore Air Train
*COMB -- Combined
ComBasFrance -- Commander United States Ports and Bases, France
COMCABCO -- Commercial Cable Company
ComCm -- Communication Countermeasures
*COMD -- Command
COMDAC -- Comité d' Action en France
Comdg -- Commanding
ComdGen -- Commanding General
ComdgOf -- Commanding Officer
Comdr -- Commander
Comdt -- Commandant
ComdtMarCorps -- Commandant, U.S. Marine Corps
ComdtNOB -- Commandant, Naval Operating Base
ComdtNY -- Commandant, Navy Yard
Com(D)WA -- Commodore (Destroyers) Western Approaches (GB)
ComExDiv -- Commander Experimental Division
ComFair -- Commander Fleet Air COFT [sic] [COMFT?] -- Commander Fleet Train
ComGen -- Commanding General
ComGenMed -- Commanding General, U.S. Army Forces, Mediterranean Theater of Operations
ComGenPOA -- Commanding General, U.S. Army Forces, Pacific Ocean Areas
ComGenTEN -- Commanding General, Tenth Army
ComGrePat -- Commander Greenland Patrol
Comin -- Commander Minecraft
CominCh -- Commander-in-Chief, United States Fleet (formerly, CinCUS)
CominDiv -- Commander Minecraft Division
CominGrp -- Commander Mine Group
ComGrpOK -- Commander Mine Group Okinawa
CominLant -- Commander Mine Force, Atlantic Fleet
CominPac -- Commander Minecraft, Pacific Fleet
CominRon -- Commander Mine Squadron
ComInst -- Communications Instructions
COMLO -- Combined Operations Material Liaison Officer
*COMM -- Communications
"Commando" -- See R5C-#
ComMARIANAS -- Commander MARIANAS
#COMMDET -- Commissioning Detail
Commo -- Commodore
COMNAS(EA) -- Commodore Naval Air Stations, East Africa (GB)
ComNavEastLantMed -- Commander U.S. Naval Forces Eastern Atlantic and Mediterranean
ComNavJap -- Commander Naval Activities Japan
ComNavNAW -- Commander U.S. Naval Forces, Northwest African Waters
ComNorPac -- Commander U.S. Naval Forces, Northern Pacific
Como -- Commodore
ComO -- Communications Officer
ComOrTexGru -- Commander Orange, Texas Group, Inactive Fleet, Atlantic Fleet
*COMP -- Composite
CompGenDec -- Comptroller General Decisions
Com(No.)PhibFor -- Commander (No.) Amphibious Force; e.g., Com3rdPhibFor
ComPatPlaneRepRonsPac -- Command Patrol Plane Replacement Squadrons Pacific
CompoRon -- Composite Squadron
Composite -- Combination Diesel electric and Diesel geared drive
#COMPRET -- Upon completion thereof return to station
CompRon or CompoRon -- Composite Squadron
#COMPTEM -- Upon completion of temporary duty
#COMPTEMDET -- Upon completion of temporary duty detached
#COMPTEMINS -- Upon completion of temporary duty under instruction
COMRATS -- Commuted Rations
ComRoute -- Commander-in-Chief, U.S. Fleet, Convoy and Routing Section
Com(location)SeaFron -- Commander (location) Sea Frontier; e.g., ComGuilfSeaFron
ComSerForSoPacSubCom -- Commander Service Force South Pacific Subordinate Command
COMSQN -- Communications Squadron (USMC)
CoMTBFlot -- Commander Motor Torpedo Boat Flotilla
CoMTBRon -- Commander Motor Torpedo Boat Squadron
CoMTBRonTraCent -- Commander Motor Torpedo Boat Squadron Training Center
ComTonGru -- Commander Tongue Point Group, Inactive Fleet, Pacific Fleet
ComTrainCarRonPac -- Commander Carrier Training Squadron, Pacific Fleet
ComUSBasFrance -- Commander U.S. Ports and Bases, France
ComZ or ComZone -- Communications Zone
*CON -- Consul
CON -- United States Safety-at-Sea Committees for the Revision of the International Convention of 1929 (USCG)
CONAB -- Commanding Officer, Naval Advanced Base
CONAB -- Commanding Officer, Naval Air Base
Con act d -- Continuous active duty
CONAIR -- Commanding Officer, Naval Air Wing
CONALT -- Construction and repair, alteration (USCG)
CONAS -- Commanding Officer, Naval Air Station
#CONASAERO -- These orders constitute assignment to duty in a part of the aeronautic organization of the Navy
"Conestoga" -- See RB-#
Conf -- Confidential
Conf -- Confine(d), confinement
ConfBul -- Confidential Bulletin
Confid -- Confidential
CONHYDROLANT -- Confidential hydrographic Office Reports (Atlantic)
Conn -- Connecticut
#CONPRESDU -- Continue Present Duty
ConRoute -- Convoy and Routing Section (US Fleet)
CONSOL -- British name for German "Sonne"; see LORAN
Const -- Construction
Constr -- Construction
#CONTREAT -- Continue treatment at (naval hospital or medical activity indicated)
Conv -- Convict (ed) (ion)
ConVAir -- Consolidated-Vultee Aircraft Corporation
ConvDD -- Converted Destroyer
#CONVERS -- Connection conversion
Convn -- Convenience
CoP -- Co-Pilot
COPP -- Combined Operations Pilotage Party
*COR -- Corps
*CORD -- Coordinate (ion) (ator)
Cord -- Coordinating of Research and Development
COREP -- Combined Overload Repair Control
"Coronado" -- See PB2Y-2-3-5-5R
Corp -- Corporal (USMC)
Corp -- Corporation
"Corsair" -- See F3A-#, FG-#, F4U-#
*CORT -- Escort
CortDiv -- Escort Division
COS -- Chief of Staff (USMC)
COSD -- Combined Operations Supply Depot
COSMD -- Combined Operations Signal Maintenance Depot
COSMO -- Combined Operations Signal maintenance Officer
COSO -- Combined Operations Signal Officer
COSSAC -- Chief of Staff, Supreme Allied Command
COSU -- Combined Operations Scout Unit (now NSU)
COTC -- Commander Fleet Operational Training Command
COTCLant -- Commander Fleet Operational Training Command, Atlantic Fleet
COTCPac -- Commander Fleet Operational Training Command, Pacific Fleet
COTCPacSubCom -- Commander Fleet Operational Training Command Pacific Subordinate Command
COTP -- Captain of the Port (USCG)
COUSNAB -- Commander of U.S. Naval Advanced Base (Weser River, Germany)
COUSS-- -- Commanding Officer, United States Ship (name of ship)
COX -- Coxswain
CoxCBS -- Coxswain, Construction Battalion, Stevedore
CoxSRR -- Coxswain, Ship Repair, Rigger
CoxSRS -- Coxswain, Ship Repair, Canvasman
Coy -- Company (USMC)
CP -- Cable Censor
CP -- Catapult
CP -- Command Post (Army)
CP -- Communication Personnel (USMC)
CPA -- Civilian Production Administration
CPAD -- Central Pay Accounts Division
CPC -- Chief Pay Clerk
CPC -- Chief Planning and Control Staff (USCG)
CPC -- Crafts, protective and Custodial Series (Civil Service employees designation)
CPCU -- Custody Pending Completion of Use
CPD -- Central Procurement Division (USMC)
CPD -- Counter-Propaganda Directorate (GB)
CPFF -- Cost plus fixed fee
CPhM -- Chief Pharmacist's Mate
CPhMDP -- Chief Pharmacist's Mate, Dental Prosthetic Technician
CPho -- Chief Photographer
CPhoM -- Chief Photographer's Mate
CPI -- Public Information Division (USCG)
CPIC -- Combined Photographic Interpretation Center
Cpl -- Corporal
CPL&D -- Civilian Personnel Letters and Dispatches
CPM -- Chief Patternmaker
CPO -- Chief Petty Officer
CPR -- Program Planning Division (USCG)
CPRB -- Combined Production and Resources Board (US & GB) (Washington)
CPrtr -- Chief Printer
CPrtrL -- Chief Printer, Lithographer
CPrtrM -- Chief Printer, Offset Process
CPS -- Combined Staff Planners
Cps -- Cycles per second
CPtr -- Chief Painter
CPtrV -- Chief Painter, Aircraft
CPX -- Command Post Exercise (Army)
C/Q -- Certificate of assignment of quarters
C/Q(not) -- Not assigned to quarters
C/Q(Term.date) -- Termination of assignment (date) to quarters
CQM -- Chief Quartermaster
CQMC -- Chief Quartermaster Clerk
CQTU -- Carrier Qualification Training Unit
CR -- Camera Repairman
C/R -- Change of rating
C&R -- (Bureau of) Construction and Repair (until 1940)
C&R -- Convoy and Routing Section
CR -- Creditable record
CR -- Cryptographer
CR -- Heavy or Light Cruiser (GB)
CR -- USNR officer designation. See C and R. Formerly (C)-R
CRA -- Air-Sea Rescue Agency (USCG)
*CRA -- Craft
Cra -- Cramp Shipbuilding Company
CRACC -- Communication and Radar Assignment Coordinating Committee
CRAG -- Carrier Replacement Air Group
CRC -- Central Requirements Committee
CRC -- Combined Rubber Committee
CRdM -- Chief Radarman
CRE -- Chief Radio Electrician
CRED -- Credit
CRF -- Cryptographic Repair Facility
CRIME -- Censorship Records and Information, middle East
CRM -- Chief Radioman
CRMB -- Combined Raw Materials Board (US & GB) (Washington)
CRO -- Cathode Ray Oscilloscope
CRO -- Civilian Repair Organization, Aircraft
Cross -- Red Cross
CRPM -- Combined Registered Publication Memoranda
CRPM -- Communication Registered Publication Memoranda
CRT -- Cathode Ray Tube
CRT -- Chief Radio Technician
CRU -- Cruiser
CruBatFor -- Cruisers, Battle Force
CruDiv -- Cruiser Division
CRUIT -- Recruit(ing)
CruitSta -- Recruiting Station
CruLant -- Cruisers, Atlantic Fleet
CruLantFlt -- Cruisers, Atlantic Fleet
CruPac -- Cruisers, Pacific Fleet
CruPacFlt -- Cruisers, Pacific Fleet
CruScoFor -- Cruiser Scouting Force
CruScoRon -- Cruiser Scouting Squadron
CRWO -- Coding Room Watch Officer
Crypto -- Cryptographic
CS (number) -- Admiral Commanding (number) Cruiser Squadron
C/S -- Chief of Staff
CS -- Cirrostratus
CS -- Coco Solo, Canal Zone
CS -- Commissary Store
CSA -- Chief Special Artificer
CSA -- Consular Shipping Adviser
CSAB -- Combined Shipping Adjustment Board (US& GB)
CSAD -- Chief Special Artificer, Synthetic Training Devices
CSAI -- Chief Special Artificer, Instruments
CSAITR -- Chief Special Artificer, Instruments, Typewrite and Office Equipment Repairman
CSAIWR -- Chief Special Artificer, Instruments, Watch Repairman
CSAO -- Chief Special Artificer, Optical
CSC -- Civil Service Commission
CSC -- Combined Shipbuilding Committee
CSClk -- Chief Ship's Clerk
CSDIC -- Combined Services Detailed Interrogation Center
CSDIC NOI -- Combined Services Detailed Interrogation Center--Non-Operational Intelligence
CSF -- Caribbean Sea Frontier
CSF -- Chief Shipfitter
CSFCBM -- Chief Shipfitter, Construction Battalion, Mechanical Draftsman
CSFCBP -- Chief Shipfitter, Construction Battalion, Pipefitter and Plumber
CSFCBR -- Chief Shipfitter, Construction Battalion, Rigger
CSFCVS -- Chief Shipfitter, Construction Battalion, Steel Worker
CSFCBW -- Chief Shipfitter, Construction Battalion, Welder
CSFPSC -- Commander, Subordinate Command, Service Force, Pacific Fleet
CSFSR -- Chief Shipfitter, Ship Repair
CSFSRP -- Chief Shipfitter, Ship Repair, Pipe Fitter and Plumber
CSFSRW -- Chief Shipfitter, Ship Repair, Welder
CSHS -- Chief Superintendent of Hydrographic Supplies
CSigO -- Chief Signal Officer (Army)
CSk -- Chief Storekeeper
CSkCB -- Chief Storekeeper, Construction Battalion, Stevedore
CSkD -- Chief Storekeeper, Disbursing
CSkT -- Chief Storekeeper, Technical
CSkV -- Chief Storekeeper, Aviation
CSM -- Chief Signalman
CSM -- Commodore Superintendent, Malta (GB)
CSO -- Communication Standing Order
CSoM -- Chief Sonarman
CSomH -- Chief Sonarman, Harbor Defense
CSp -- Chief Specialist
CSP -- Combined Staff Planners
CSP -- Communications Security Publication
CSpA -- Chief Specialist, Physical Training Instructor
CSPM -- Communication Security Publication Memorandum
CSpMP -- Chief Specialist, Motion Picture Production
CSpO -- Chief Specialist, Petroleum Inspector
CSpPBL -- Chief Specialist, Laboratory
CSpPPG -- Chief Specialist, Photogrammetry
CSpPVM -- Chief Specialist, V-Mail
CSpR -- Chief Specialist, Graphic Arts
CSpR -- Chief Specialist, Identification
CSpR -- Chief Specialist, Recruiter
CSpS -- Chief Specialist, Personnel Supervisor V-10
CSpS -- Chief Specialist, Shore Patrol and Security
CSpT -- Chief Specialist, Teacher
CSpTLT -- Chief Specialist, Link Trainer Instructor
CSpV -- Chief Specialist, Transport Airman
CSpW -- Chief Specialist, Chaplain's Assistant
CSpX -- Chief Specialist, All Designators
CSpY -- Chief Specialist, Control Tower Operator
CSSA -- Clothing and Small Stores Account
CSSF -- Clothing and Small Stores Fund
CSSM -- Chief Ship's Service Man
CSSMB -- Chief Ship's Service Man, Barber
CSSMC -- Chief Ship's Service Man, Cobbler
CSSML -- Chief Ship's Service Man, Laundryman
CSSMT -- Chief Ship's Service Man, Tailor
CSt -- Chief Steward
CT -- Cartographer
CT -- Chief Telegrapher
CT -- Combat Team
CT -- Crystal Grinders
CT -- USNR officer designation. See C and T. Formerly (C)-T.
CTC -- Chief Turret Captain
CTC -- Combined Training Center
CTCLS -- Court of Claims
CTD -- Commander Transportation Division
CTF -- Central Task Force
CTF -- Commander Task Force
CTG -- Commander Task Group
CTM -- Chief Torpedoman's Mate
CTME -- Chief Torpedoman's Mate, Electrical
CTMV -- Chief Torpedoman's Mate, Aviation
CTorp -- Chief Torpedoman
CTU -- Commander Task Unit
CU -- Cumulus
CU -- New York to Netherlands West Indies (routing designation)
CU -- New York to United Kingdom (routing designation)
"Cub" -- An advanced base unit consisting of all the personnel and material necessary for the establishment of a medium sized advanced fuel and supply base
CUCB -- Cumulus and Cumulonimbus
CUDWR -- Columbia University Division of War Research
Cur -- Curtis design (ship engines)
CUS -- Course
*CUT -- Cutter
CV -- Cavite, P.I. (Navy Yard)
CV -- Aircraft Carrier
CVAC -- Consolidated-Vultee Aircraft Corporation
CVB -- Aircraft Carrier, Large
CVB -- Reserve Vessel Board (USCG)
CVE -- Aircraft Carrier, Escort
C-V(G) -- USNR officer designation for communication officers, commissioned and warrant, including radio electricians, qualified for general detail afloat or ashore. This classification was abolished in September 1944 and replaced by one of the following: (C), (C)L, (CD), (S) or S(C).
CVL -- Aircraft Carrier, Small
C-V(L) -- USNR officer designation for commissioned communication officers qualified for liaison duties with commercial communication industry and government communication agencies. This classification was abolished in September 1944 and replaced by S(C1).
CVLG(N) -- Night Fighter Air Group
CVS -- Seaplane Carrier
C-V(S) -- USNR officer designation for communication officers, commissioned and warrant, including radio electricians, qualified for specialist duties. This classification was abolished in September 1944 and replaced by one of the following: (C), (C)L, (CD), (S), or S(C)
C-V(X) -- USNR officer designation for communication officers qualified for Naval Communications intelligence and security duties. This classification was abolished in September 1944 and replaced by S(C2).
CW -- Chemical Warfare
CW -- Continuous Wave (radio symbol for code transmission) CWA -- Canadian Western Approaches
CWO -- Commissioned Warrant Officer
CWO -- Communications Watch Officer
CWPI -- Coast Watching and Communications in the South Pacific Islands (GB)
CWS -- Chemical Warfare Service (Army)
CWSF -- Commander Western Sea Frontier
CWT -- Chemical Warfare Specialist, Medical
CWT -- Chief Water Tender
CX -- USNR officer designation. See C and X. Formerly (C)-X.
CY -- Chief Yeoman
"Cyclone" -- Naval aircraft engine, 9 (14)(18) cylinders, manufactured by Wright
CZ -- Combat Zone (Army)
CZ -- Panama Canal Zone
