This site contains a comprehensive list of U.S. military terms and definitions.
i Inclination I2 Intelligence Information IA (1) Imagery Analyst; (2) Intelligence Assistant; (3) Initial Assessment; (4) Intelligence Analyst; (5) Intelligence Agent IAA Interagency Agreement I&A (1) Imagery and Analysis; (2) Identifcation and Authentication IAB Imagery Analysis Branch IAC (1) Intelligence Analysis Center; (2) Intelligence Advisory Committee; (3) Intelligence Analyst Course (DIA); (4) Information Analysis Centers IAD (1) Intelligence Analysis Division; (2) Integrated Air Defense IADB Inter-American Defense Board IADS Integrated Air Defense System IAEA International Atomic Energy Agency IAG (1) Intelligence Analysis Group (formerly ITAD); (2) Imagery Analysis Group IAGC Instantaneous Automatic Gain Control IAGS Inter-American Geodetic Survey IAIPS Integrated Automated Intelligence Processing System IAM Imagery Analysis Memorandum IAMP Imagery Acquisition and Management Plan IAMS Individual Aerial Mobility System IAN Imagery Analysis Notice IAP International Airport IAPF Inter-American Peace Force IAR Imagery Analysis Report IAS (1) Intelligence Access System; (2) Interactive Applications System; (3) Intelligence Analysis System IAS WS IAS Work Station IASSA INSCOM Automated Systems Support Activity IAT Intelligence Augmentation Team IATA International Air Transport Association IAW In Accordance With IAWG Interagency Working Group IAWS Improved Analyst Workstation IBAC Identity-Based Access Control IBs Issue Books IBBS Interim Brigade/Battalion Simulation IBD Intelligence Baseline Document IBDTF IBD Transaction Format IBE Field-Initiated BE Number IBERLANT Iberian Atlantic Area IBIS Imaging Background Limited Infrared System IBM International Business Machines IBO Intelligence Baseline Overview IBOS Intelligence Battlefield Operating System IBS (1) Interactive Beacon System; (2) Integrable Base Station; (3) Integrated Broadcast Service; (4) Intelsat Business Service; (5) Integrated Bridge System IBSSIR Background Signature Survey IBTA Integrated Battlefield Targeting Architecture IBUR Intelligence Bottom-Up Review IC (1) Intelligence Community; (2) Intelligence Collection; (3) Integrated Circuit; (4) Intelligence Center; (5) Irish Concern IC/EC Intelligence Community/Executive Committee ICA Intelligence Center Atlantic ICAF Industrial College of the Armed Forces ICAO International Civil Aviation Organization ICAP Improved Capabilities Program ICARIS Intelligence Communications Architecture and Requirements Information System ICBM Intercontinental Ballistic Missile ICC (1) Integrated Communications Center; (2) Intelligence Continuity Cell; (3) IMlNT Coordination Cell; (4) Intelligence Coordination Center (Coast Guard); (5) Initial Connectivity Capability ICCC International Council for Computer Communication ICD (1) Interface Control Document; (2) Intelligence Collection Division; (3) Initiative Communications Deception ICDP Intelligence Career Development Program ICE (1) Independent Cost Estimate; (2) Interface Control Element ICEDEFOR Iceland Defense Forces ICES International Cooperation in Ocean Exploration ICF (1) Intelligence Collection Flight; (2) Intelligence Contingency Funds; (3) Interconnect Facility ICFTU International Confederation of Free Trade Unions ICIG IDHSS CSSR Interface Guard ICITAP International Criminal Investigative Training and Assistance Program ICL Intelligence Coordination Cell ICM (1) Improved Conventional Munitions; (2) Intelligence Correlation Module; (3) Integrated Common Modules ICMC Intelligence Collection Management Course ICOD Intelligence/Information Cut-Off Date ICOM Integrated COMSEC (SINCGARS) ICON Image Communications and Operations Node ICP (1) Intelligence Collection Platform; (2) Interface Change Proposals; (3) Incremental Change Packages ICPS Intelligence Communications Processing Shelter ICR Intelligence Collection Requirement ICRC (1) Intelligence Contingency Readiness Center; (2) International Committee of the Red Cross ICRS Imagery Collection Requirements Subcommittee (COMIREX) ICS (1) Intercommunications System; (2) Intelligence Community Staff ICTF Interagency Crisis Task Force ICTT (1) Improved Commander’s Tactical Terminal; (2) Interim Commander’s Tactical Terminal ICU Interface Control Unit ICV Infantry Combat Vehicle ICW In Coordination With ICWG (1) Interface Control Working Group; (2) Imagery Coordination Working Group ID (1) Identification; (2) Infantry Division; (3) Intelligence Division IDA Institute for Defense Analysis IDAD Internal Defense and Development IDB (1) Integrated Data Base; (2) Inter-American Development Bank IDB-II PC-Based Integrated Data Base IDBM Integrated Data Base Maintenance IDBR Integrated Data Base Retrieval IDBTF Intelligence Data Base Transaction Format IDC Interagency Defector Committee IDCSP Initial Defense Communications Satellite Program IDEAS Intelligence Data Element Authorization Standards IDES Installation Damage Expectancy Summary IDEX Imagery Data Exploitation System IDEX II Imagery Data Exploitation System II IDF (1) Israeli Defense Force; (2) Installation Data File IDHS Intelligence Data Handling System IDHS IDHS for the mid-1990s IDHS-2000 Intelligence Data Handling System for the Year 2000 IDHS-II Intelligence Data Handling System, Second Iteration IDHSC Intelligence Data Handling System Communications IDHSC-II Intelligence Data Handling System Communications, Version II IDIMS Interactive Digital Image Manipulation System IDIQ Indefinite Delivery, Indefinite Quantity IDIRA Introduction to Defense Intelligence Research and Analysis (DIA) IDL Interoperable Data Link IDM Improved Data Modem IDMS IPAC Document Management System IDN Integrated Data Network IDNX Integrated Digital Network Exchange IDP Intelligence Data Processor IDPS (1) Imagery Data Processing System; (2) Integrated Deployable Processing System; (3) Interim Deployable Processing System IDS (1) Intrusion Detection System; (2) Infrared Detection Set IDSCS Initial Defense Satellite Communications System IDSCP Initial Defense Satellite Communication Program IDSF Intelligence Defector Source File IDTT Inactive Duty Training Travel IDZ Inner Defense Zone IEA International Energy Agreement IEBL Inter-Entity Boundary Line IEC (1) Imagery Exploitation Center; (2) Intelligence Exchange Conference IED (1) Improvised Explosive Device; (2) Imitative Electronic Deception IEG Imagery Exploitation Group IEMATS Improved Emergency Message Automated Transmission System IEP Independent Evaluation Plan IEPG Independent European Program Group IEPR Information Exchange and Processing Requirements Report IER Independent Evaluation Report IES Imagery Exploitation System IESS Imagery Exploitation Support Segment IEW Intelligence and Electronic Warfare IEWCS IEW Common Sensor IEWD Intelligence and Electronic Warfare Directorate IEWFAM IEW Functional Area Model IEWSE IEW Support Element IEWTAC IEW Technology Assessment Center IEWTPT IEW Tactical Proficiency Trainer IF (1) Interrogation Facility; (2) Identification Frequency; (3) Intermediate Frequency IFAC International Federation of Automatic Control IFF Identification, Friend or Foe IFFN Identification, Friend, Foe or Neutral IFOR Implementation Force (Operation JOINT ENDEAVOR) IFOV Instantaneous Field-of-View IFPS Interformation Position System IFR Instrument Flight Rules IFRB International Frequency Registration Board IFS Imagery File Server IFTE Integrated Family Test Equipment IFV Infantry Fighting Vehicle IG (1) Interagency Group; (2) Inspector General; (3) Intelligence Group (Air Force) IGCP Intelligence Guidance for COMINT Programming IGD Intelligence Guidance Document IGR Improved GUARDRAIL IGRV Improved GUARDRAlL V IGS Image Generation System IGSM Interim Ground Station Module IGT Interdepartmental Group on Terrorism IGY International Geophysical Year IHC Intelligence Information Handling Committee IHE Insensitive High Explosive IHFR Improved High Frequency Radio IHO (1) International Hydrographic Organization; (2) In Honor of IHR In-Extremis Hostage Rescue II (1) Imagery Interpretation; (2) Imagery Interpreter IIC Imagery Interpretation Center IICT Interagency Intelligence Committee on Terrorism IID Integrated Information Display IIDP Integrated Intelligence Development Plan (USCINCEUR) IIE Installation Identification Element IIF Imagery Interpretation Facility IIG (1) Imagery Intelligence Group (formerly USAlIC); (2) Intelligence Inspector General IIM Interagency Intelligence Memorandum IIN Imagery Interpretation Note IINCOMNET Intratheater Intelligence Community Network IINS Imagery Information Need Statement IIPL Integrated Intelligence Priority List IIR (1) Imaging Infrared; (2) Intelligence Information Report; (3) Imagery Interpretation Report IIRES Imagery Interpretation, Reporting, and Exploitation System IIRK Interarea Interswitch Rekeying Key IIRS Imagery Interpretability Rating Scale IIS (1) Indirect Identification System; (2) IPAC Intelligence Summary; (3) Imagery Interpretation Segment IISE Intelligence Information System Enhancement IISS Intelligence Information Subsystem IITLPC Inter/Intra Team Low Power Communications IITS (1) Intra-Theater Imagery Transmission System; (2) Installation Information Transfer Systems IIU (1) Imagery Interpretation Unit; (2) Imagery Interface Unit IJMS Interim JTIDS Message Standard ILAM Improved Limpet Assembly Modular ILC International Lines of Communication ILD Injection Laser Diode ILE Intelligence Liaison Element ILEA International Law Enforcement Academy ILO Intelligence Liaison Officer ILP Intelligence Liaison Party ILS (1) Instrument Landing System; (2) Integrated Logistic Support ILSA Improved Lightweight Satellite Antenna IM (1) Information Management; (2) Intermodulation IM/GD Intelligence Management/Guidance Document IMA (1) Institute for Military Assistance; (2) Intelligence Mobilization Augmentee; (3) Information Mission Area I-MAE Interim Medium Altitude Endurance UAV (formerly Tier I) IMAF 1st Marine Amphibious Force IMAP Interim Mission Assessment Program IMB (USCENTCOM) Intelligence Management Board IMC The International Medical Corps IMCO Intergovernmental Maritime Consultative Organization IMD Intelligence Management Document IMEF First Marine Expeditionary Force IMET (1) International Military Education and Training; (2) Integrated Management Evaluation Team IMETS Integrated Meteorological System IMF International Monetary Fund IMINT Imagery Intelligence IMIS (1) Intelligence Management Information System; (2) Integrated Management Information System IMLETT International Maritime Law Enforcement Training Team IMMP Information Management Master Plan IMNET Imagery Network IMOM Intelligence Many-on-Many IMOC International Maritime Officer Course IMP (1) Interface Message Processor; (2) Input Message Processor; (3) Image Product; (4) Information Management Program IMPs Imagery Products IMS International Military Staff (NATO) IMSAT Imagery Satellite IMSE Imagery Management Support Element IMSO International Maritime Satellite Organization IMTT Intelligence Mobile Training Team IN (1) International Negotiations; (2) Intelligence; (3) Infantry; (4) Director of Intelligence (Air Force Component) (also A2) INA Information Not Available INCA (1) Intelligence Communications Architecture; (2) Integrated Nuclear Communications Assessment INCOLLNOM Intelligence Collection Requirement Nomination INCOMNET Intratheater Intelligence Communications Network INCSEA Incidents at Sea INDICOM (1) Indications Communication Network; (2) Indications and Warning Communications INDICOMM Indications Intelligence Communications INEWS Integrated Electronic Warfare System inf Infantry INF Intermediate-Range Nuclear Forces INFIL Infiltration INFLIGHTREP Inflight Reports INFLTRPT Inflight Reports INFO Information INFOSEC (1) Information Security; (2) Information Systems Security INGO International Nongovernmental Organizations INI Initiation INL International Narcotics and Law INMARSAT International Maritime Satellite INMS Integrated Network Management System INR Bureau of Intelligence and Research (State Department) INS (1) Inertial Navigation System; (2) Immigration and Naturalization Service INSAT Indian Satellite INSICOM Integrated Special Intelligence Communications INSCOM U.S. Army Intelligence and Security Command INST Instruction INSTA Automated Installations File (DIAOLS) INSTAL Installation instl Installation INSUM Intelligence Summary INT/INTEL Intelligence INTACS (1) Integrated Tactical Communications System; (2) Integrated Tactical Communications Study INTCP Intercept INTEL Intelligence INTELCAST Intelligence Broadcast INTELCOM Worldwide Intelligence Communication INTELDATA Intelligence Data INTELINK Proper Name of System INTELSAT International Telecommunications Satellite Organization Intelink Command server/client system that allows secure SCI connectivity to all commands on the network, and access to available files without additional log-on. INTELNET Intelligence Network Internet International Network INTI CI database intg Interrogation INTRA International Travel by Selected Foreign Officials Intranet Internet with local scope INTREP Intelligence Report INREQ Intelligence Request INTSUM Intelligence Summary INUT Indian Nuclear Underground Test IO (1) Indian Ocean; (2) Intelligence Officer; (3) Information Objectives; (4) Intelligence Objective; (5) Intelligence Operations (Division); (6) Information Operations; (7) Information Objectives I/O Input/Output IOA Indian Ocean Area IOB Intelligence Oversight Board IOC (1) Initial Operational Capability; (2) Intelligence Operations Center IOCTL Indian Ocean Conventional Target List IOD Intelligence Operations Division (USEUCOM) IOF Intelligence Operations Facility IOIC Integrated Operational Intelligence Center IOM Input/Output Module IOMDWG Interagency Offensive Missile Deployment Working Group IONDS Integrated Operational Nuclear Detection System IOR Individualized Operational Ration IONDS Integrated Operational Nuclear Detection System IOS (1) Intelligence Operations Specialist; (2) International Organization for Standards IOSS (1) Integrated Operational Support Study; (2) Intelligence Organization Stationing Study IOT&E Initial Operational Test and Evaluation IP (1) Initial Point; (2) Imagery Processing; (3) Intelligence Problem; (4) Instrumentation Point; (5) Immediate Permanent Incapacitation Dose; (6) Internet Protocol IP/MP Inphase/Midphase IPA (1) Intelligence Production Activity; (2) Imagery Product Archive IPAT Intelligence Planning/Programming Analysis Tool IPB Intelligence Preparation of the Battlefield/Battlespace IPC (1) Industrial Planning Committee; (2) Intelligence Producers’ Council; (3) Intelligence Production Center IPCP Intelligence Production Campaign Plan IPCS Intelligence Producers Council Staff IPD (1) Intelligence Planning Document; (2) Intelligence Plans Division (USEUCOM); (3) Intelligence Production Division IPDB Intelligence Production Data Base IPDS Imagery Processing and Dissemination System IPE Intelligence Production Element IPF (1) Integrated Processing Facility; (2) Intelligence Processing Facility (Guardrail) IPG Implementation Planning Group IPIR (1) Immediate Photo Interpretation Report; (2) Initial Photographic Interpretation Report; (3) Initial Programmed Interpretation Report; (4) Initial Phase Interpretation Report IPR Integrated Personal Armor IPIX Interface Processor for Imagery Exchange IPM (1) Interface Processor for Imagery Exchange; (2) Intelligence Programs Management IPMA Intelligence Production Management Activity IPMO Intelligence Program Management Office IPL Integrated Priority List IPM Interpersonal Messaging IPOIC Interagency Prisoner of War Ad Hoc Committee IPOM Intelligence Program Objective Memorandum IPP (1) Intelligence Producer Profile; (2) Impact Point Prediction IPR (1) Intelligence Production Requirement; (2) In Process Review; (3) Impulse Response; (4) Internet Protocol Route IPRG (1) Intelligence Priorities Review Group; (2) Intelligence Program Review Board IPS (1) Integrated Program Summary; (2) Intelligence Production System; (3) Imagery Processing Segment (CARS); (4) Intelligence Production Section; (5) Instructions Per Second; (6) Imagery Processing System IPSC Information Processing Standards for Computers IPSG Intelligence Program Support Group (now CISA) IPSO Internet Protocol Security Option IPSP Intelligence Priorities for Strategic Planning IPT Integrated Product Team IPU Inter-Parliamentary Union IPW Interrogation of Prisoners of War IPWG Intelligence Priorities Working Group IPX Internet Packet Exchange IR (1) Infrared; (2) Intelligence Information Report; (3) Illumination Rate; (4) Impulse Response; (5) Information Requirement; (6) Intelligence Requirement; (7) Initial Radiation; (8) Induced Radiation; (9) Information Ratio I2R Imaging Infrared IRA Intelligence-Related Activities IRAC Interdepartmental Radio Advisory Committee IRBM Intermediate-Range Ballistic Missile IRC (1) International Red Cross; (2) International Rescue Committee IRCM Infrared Countermeasures IRCS Improved Radar Calibration System IR&D Independent Research & Development IRD (1) Independent Research & Development; (2) Intelligence Resources Division; (3) Intelligence Reserve Detachment IRDB Integrated Requirements Data Base IRDC Intelligence Research and Development Council IRDHS Imagery-Related Data Handling System (see AIRES) IREMBASS Improved Remotely Monitored Battlefield Surveillance System IRDS Infrared Detection System IREMBASS Improved-Remotely Monitored Battlefield Sensor System IREPS Integrated Refractive Effects Prediction System IRF (1) Imagery Readiness Facility; (2) Intelligence Readiness Facility IRG Interdepartmental Regional Group IRGM Infrared Guidance Module IRINT Infrared Intelligence IRIS Infrared Imaging System IRISA Imagery Report Index Summary IRISF Intelligence Report Index Summary File IRK Interswitch Rekeying Key IRLS Infrared Line Scanner IRM (1) Intelligence Requirements Management; (2) Information Resource Management IRMS Imagery Requirements Management System IROF Imagery Reconnaissance Objectives File IROL Imagery Reconnaissance Objectives List IROP (1) Imagery Reconnaissance Objectives Plan; (2) Infrared Optical Intelligence; (3) Imagery Requirements Objectives Program IRPG Installation Reference Points Graphics IRPIA Intelligence Information Report Photo Index IRR (1) Individual Ready Reserve; (2) Intelligence Requirement Request; (3) Intelligence Readiness Report IRS (1) Intelligence Research Specialist; (2) Internal Revenue Service; (3) Interface Requirements Specification; (4) Intelligence Requirements Subcommittee IRSCOM Imagery Requirements Subcommittee IS (1) Information Systems; (2) Intelligence Specialists; (3) Intelligence Squadron I&S (1) Intelligence and Security; (2) Intelligence and Surveillance ISA (1) International Security Affairs; (2) Interservice Support Agreement; (3) Intelligence Support Activity; (4) Integration Support Activity; (5) International Support Agreement ISAF Israeli Air Force ISAR Inverse Synthetic Aperture Radar ISARC Intelligence, Surveillance, and Reconnaissance Cell ISB (1) Initial Staging Base; (2) Intermediate Staging Base; (3) Intelligence Systems Board; (4) Intelligence Support Base ISC (1) Information Systems Command; (2) Information Science Center; (3) Intelligence Support Cell ISCO Intelligence Support to Combined Operations ISC/SC Intelligence Specialist Chief/Senior Chief ISD (1) Intelligence Support Detachment; (2) Intelligence Security Division; (3) Intelligence Support Division ISDB Integrated Satellite Data Base ISDN (1) Integrated Services Data Network; (2) Intelligence Services Digital Network ISEIntelligence Support Element ISEMS Improved Spectrum Efficiency Modeling and Simulation ISEW Intelligence, Security, and Electronic Warfare ISF Intelligence Support Facility (U.S. Navy) ISG Intelligence Support Group (U.S. Navy) ISHMRS Improved SOF High Frequency Manpack Radio System ISIC Intelligence Support and Indications Center ISID Interim Secondary Imagery Dissemination System ISIDS Improved SIDS ISINT Instrumentation Signals Intelligence ISIP Intelligence Support Interface Program ISIS (1) Integrated Signals Intelligence System; (2) Interim SOCOM Intelligence Threat Data System ISLES Information Systems for Law Enforcement Support ISM Industrial Security Manual ISMB Intelligence Systems Management Board ISO (1) Information Systems Office; (2) International Standards Organization ISOFAC Isolation Facility ISOPREP Isolated Personnel Report ISOS Intelligence System of Systems ISP (1) Intelligence Support Plan; (2) Industrial Security Program; (3) Intelligence Support Processor; (4) Integrated Survey Program; (5) Intelligence Survey Program ISP DCS Integrated Survey Program Data Collection System ISP CPE Integrated Survey Program Central Production Element ISPER IPAC Special Reports ISPO Intelligence Support Program Office ISPR Information Systems Processing Request ISPS (1) ISP Server; (2) Improved SOF Power Sources ISPT Intelligence Support Processor Tool ISR (1) Imagery Support Requirement; (2) Inter-Agency Source Registry; (3) Intelligence, Surveillance and Reconnaissance ISRD Information Systems Requirement Document ISS (1) Intelligence Support System; (2) Intelligence Support Subsystem; (3) Intelligence Support Staff; (4) Information Security System; (5) Information Systems Security I&SS Intelligence and Security Service ISSA (1) Information Systems Support Activity; (2) Inter-service Support Agreement ISSM Information Systems Security Manager ISSO (1) Information Systems Security Officer; (2) Intelligence Systems Support Office ISST ICBM SHF Satellite Terminal IST (1) Imagery Support Terminal; (2) Intelligence Support Team; (3) Intelligence System Team ISTA Intelligence, Surveillance, Target Acquisition ISWG Intelligence Support Working Group ISYSCON Integrated System Control IT Immediate Transient Incapacitation Dose ITA (1) Intelligence Terrain Analyzer; (2) International Telegraph Alphabet ITAAS Intelligence Training Army Area Schools ITAC (1) Intelligence and Threat Analysis Center (U.S. Army); (2) Intelligence Tracking Analysis and Correlation ITACIES Interim Tactical Imagery Exploitation System (U.S. Army) ITACS Integrated Tactical Air Control System ITAR International Traffic in Arms Regulations ITAS Improved Target Acquisition System ITC Interagency Training Center ITCT Improved Tactical Commander’s Terminal ITD (1) Interim Terrain Data; (2) Individual Training Directorate; (3) International Training Division ITDB Intercept Tasking Data Base ITDN Integrated Tactical Data Network ITEP (1) Interim Tactical ELINT Processor (U.S. Army); (2) Integrated Threat Evaluation Program ITF Intelligence Task Force ITFN Intra-Task Force Network ITG Interdiction Target Graphic ITIBS Improved TIBS ITIC-PAC INSCOM Theater Intelligence Center-Pacific ITII Internal-to-Internal Interface ITL Interagency Telephone Laboratory ITO (1) International Trade Organization; (2) Integrated Tasking Order ITOC Interrogation Translation Operations Center ITP (1) Intelligence Town Plan; (2) Interrogation/Translation Platoon ITS Imagery Transmission System ITSS Integrated Tactical Surveillance System ITT Interrogator Translator Team ITU (1) Interrogator-Translator Unit; (2) International Telecommunications Union ITUT Interim Tactical Users Terminal ITW (1) International Targeting Workstation; (2) Integrated Threat Warning ITW&AA Integrated Tactical Warning and Attack Assessment IU (1) Interface Unit; (2) Image Understanding lUG Intelligence Users’ Guide IUS Inertial Upper Stage IUSS Integrated Undersea Surveillance System IVAN Intelligence Van IVCS Integrated Vehicle Communications System IVD Interactive Video Disk IVIS Inter-Vehicle Information System IVSN Initial Voice Switched Network IW (1) Information Warfare; (2) Intelligence Wing I&W (1) Indications and Warning; (2) Intelligence & Warning IWC Information Warfare Center IWD Intermediate Water Depth IWG Intelligence Working Group IWO Intelligence Watch Officer IWS (1) Intelligence Work Station; (2) Information Warfare Squadron IWSDB Integrated Weapon System Data Base IWST Information Warfare Support Team IWT Intelligence Watch Team IWTS Indications and Warning Training System IWW Inland Waterway IX Unclassified Miscellaneous Ship