Naval History and Heritage Command
The Navy Department Library
Abbreviations Used in Text and Appendixes
Adm - Admiral
Addees - Addresses
ALNAV - All Navy
AirRon - Air Squadron
A/CNO - Assistant Chief of Naval Operations
BatDiv - Battleship Division
BB - Battleship
BasFor - Base Force
Bdcst - Broadcast
CA - Heavy Cruiser
C/A - Cryptanalysis
CarDiv - Carrier Division
Cdr - Commander
CINCAF - Commander-in-Chief, Asiatic Fleet (US)
CINCPAC - Commander-in-Chief, Pacific Fleet (US)
CINC2 - Commander in Chief, Second Fleet (IJN)
CL - Light Cruiser
CNO - Chief of Naval Operations, OPNAV
Coll - Collective
COMINT - Communications Intelligence
COMSEC - Communications Security
COM-14 - Commandant, 14th Naval District (Hawaii)
COM-16 - Commandant, 16th Naval District (P.I.)
ComCarDiv - Commander, Carrier Division
ComUnit - Communications Unit
COS - Chief of Staff
COSCombined - Chief of Staff, Combined Fleet
COS2 - Chief of Staff, Second Fleet
CruDiv - Cruiser Division
CV - Fleet Carrier
CVL - Light Carrier
DD - Destroyer
DesRon - Destroyer Squadron
DF - Direction Finding
DNC - Director of Naval Communications (OP-20)
DNI - Director of Naval Intelligence (OP-16)
DOE - Division of Effort
FECB - Far East Combined Bureau
1stAirFltStf - First Air Fleet Staff
1stSecCh - first Section Chief
Flt - Fleet
GC&CS - Government Code and Cipher School
GD - Guard District
GdDiv - Guard Division
Hydro - Hydrograhic
InfBde - Infantry Brigade
InfDiv - Infantry Division
Majcom - Major Command
MI - Military Intelligence
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MilPrep - Military Preparations
Msgs - Messages
NavalAux - Naval Auxiliaries
NavalSec - Naval Section
ND - Naval District
NGS - Naval General Staff
NTR - Nothing to Report
OIC - Officer in Charge
ONI - Office of Naval Intelligence
OPNAV - Chief of Naval Operations
ORANGE - Japan
OTRG - On the Roof Gang
PBY - Amphibious Patrol aircraft
P.H. - Pearl Harbor
RCA - Radio Corporation of America
R/Adm - Rear Admiral
Reg't Grp - Regimental Group
RI - Radio Intelligence
RIP - Registered Intelligence Publication
RNO - Resident Naval Officer
Scty - Secretary
SECNAV - Secretary of the Navy
SEF - Southern Expeditionary Force
6FLT - Sixth Fleet
SIGINT - Signals Intelligence
SRH - Special Research Histories
SS - Submarine
T/A - Traffic Analysis
Tech Bur - Technical Bureau
Tfc - Traffic
T/I - Traffic Intelligence
Tokyo Comms - Tokyo Communications Unit
UK - United Kingdom
VAdm - Vice Admiral
Yrd - Yard
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