| Acronyms | Meaning / Significance |
Source |
| S | Server | |
| S | Service | |
| S&WIS | Sensors and Warning Installation Sub-System | |
| S/CR AWHQ | SHAPE and Central Region Alternate War Headquarters | |
| S/J | Signal to Jam Ratio | |
| S-HTTP | Secure HyperText Transfer Protocol | ACE ACCIS core cap specs |
| S-Series | Alphabetical Telegraph and Telematic (except Facsimile) Services Terminal | ITU-T recommendation |
| SA | scientific and environmental affairs division | NATO IS |
| SA | System Administrator | |
| SAA | Security Accreditation Authority | |
| SAA | SHAPE AFSOUTH AMPS | |
| SAA | Subdomain Addressing Authority | |
| SAC | Source Area Code | |
| SAC | Special Access Component | |
| SAC | Supreme Allied Commander | |
| SACEUR | SAC Europe | |
| SACF | Single Association Coordinating Function | |
| SACLANT | SAC Atlantic | |
| SACLANTCEN | SACLANT Udersea Research Centre | |
| SADS | system architecture development study | |
| SAGE | standard automated guard environment | |
| SAI | sea/air interface | |
| SAI | Subdomain Addressing Authority Identifier | |
| SALT | Strategic Arms Limitation Talks | |
| SAM | Assistemce Missions | |
| SAM | Surface to Air Missile | |
| SAME | SQL ADA module extensions | |
| SAMeDL | SAME Desciption Language | |
| SAMOC | Surface to Air Missile Operation Center | ACCS |
| SAMS | SHAPE ACCIS maintenance system | |
| SANISI | Security Architecture for NATO Information Systems Interconnection | |
| SANTIS | Single Architecture for NATO Technical Interoperability Standards | |
| SAP | Service Access Point | |
| SAR | Search and Rescue | |
| SAR | Synthetic Aperture RADAR | |
| SARPs | Standards and Recommended Practices | |
| SAS | special ammunition storage | |
| SATAN | security analysis tools for auditing | |
| SATCIS | single architecture of technical common IF standard | OSI layers 1 - 4 |
| SATCOM | Satellite Communications | |
| SATURN | second generation Anti-jam Tactical UHF-Radio for NATO | |
| SAW | static alternate war headquarters | |
| SAW | Surface to air Weapon | |
| SBU | sensitive but unclassified | |
| SC | Strategic Command | |
| SC | sea control | |
| SC | Steering Committee | STC CSNI final report 22/9/95 |
| SC | strike cell | |
| SC | Sub Committee | |
| SCANT | slidex codeword address / nickname telephone | |
| SCARS | Status Control Alerting and Reporting System | C2 of Substrategic Nuclear Forces |
| SCAT | Surveillance Capability Assessment Tool | |
| SCC | secure computing corporation | |
| SCC | SHAPE Command Center | STC TN-155 |
| SCCP | Signalling Connection Control Part | |
| SCDL | surveillance and control data link | |
| SCECC | Senior Civil Emergency Crisis Cell | |
| SCEPC | Senior Civil Emergency Planning Committee | NATO Committee |
| SCG | Special Consultative Group | NATO Committee |
| SCG | senior crisis group | |
| SCI | sensitive compartmented information | |
| SCI | serial communications interface | STC CSNI final report 22/9/95 |
| SCI | Site Compliance Inspection | |
| SCIC | science committee | |
| SCIDA | systems coordination installation design authority | UK |
| SCMC | SNR communications management centre | |
| SCNR | Scientific Committee of National Representatives | Disbanded. Functions assumed by NC3B |
| SCO | system capability objectives | |
| SCOPE | secure cooperationg processing environment | |
| SCP | Shipping Control Point | |
| SCS | standard communication server | |
| SCSG | satellite communications sub-group | AC/317(WG/1)N/600 |
| SCSI | standing communications security instructions | ACE ACCIS core cap specs |
| SCTIS | Single Channel Transponder Injection System | |
| SCTR | Single Channel Transponder Receiver | |
| SCTS | US single channel transponder system | AC/317/SEC/95/47 |
| SD | Sub-Domain | |
| SD&IC | Systems Design and Integration Contract | |
| SDD | Synthetic Data Display | |
| SDH | Synchronous Digital Hierarchy | |
| SDI | Strategic Defence Initiative | |
| SDIP | SECAN doctrine and information publication | |
| SDL | Specification and Description Laguage | |
| SDM | STC Intelligence Data Model | |
| SDNS | secure data network system | |
| SDP | Sensor Data Processor | |
| SDR | small development requirement | |
| SDR | summary description report | |
| SDR | system design review | |
| SDS | system direction and support | |
| SDTF | Strategy Development Task Force (EATCHIP) | |
| SDTS | spatial data transfer standard | |
| SDU | service data unit | STC CSNI final report 22/9/95 |
| SDU | software distribution utilities | |
| SE&I | systems engineering and integration | |
| SEAD | Suppression of Enemy Air Defence | |
| sec | Section | |
| SECAN | SECurity and Evaluation Agency | MC 108/5 |
| SecOps | Security Operating Procedures | |
| SEE | software engineering environment | consultancy work on life cycles |
| SEE | synthetic exercise environment | CP 5A0008 |
| SEISRS | System-specific Electronic Information Security Requirement Statement | |
| SELRIP | selected release improvement programme | |
| SEP | selective imployment plan | |
| SEP | system executive and plan | |
| SESAM | semi-active surface-to-air missile | |
| SESN | SACEURs Emergency Strike Network | |
| SET | satellite experimental terminal | |
| SETO | Southern Europe transport organisation | |
| SEWG | System Engineering Working Group | |
| SFOR | Stabilisation Force | |
| SFP | Sensor Fusion Post | ACCS |
| SfP | Science for Peace | |
| SG | Secretary General | |
| SG | slice group | |
| SG | Sub-Group | |
| SGFS | Special Group of Functional Standards | |
| SGML | standard generalized markup language | |
| SGP | Senior Political-Military Group on Proliferation | NATO Committee |
| SGT | Satellite Ground Terminal | AC/317(WG/1)N/556 |
| SGTS | AC/317(WG/1)(SG/2)N/183 | |
| SHA | Secure Hash Algorithm | |
| SHAPE | Supreme Headquarters Allied Powers Europe | |
| SHARE | Stock Holding and Asset Requirements Exchange | |
| SHD | Special Handling Detachment | |
| SHED | Special Handling and Evaluation Detachment | |
| SHEDCOINS | SHED Communication INformation System | |
| SHEWS | SHAPE Early Warning System | |
| SHF | Super High Frequency | STC CSNI final report 22/9/95 |
| SHIFS | SHAPE information flow system | |
| SHIMS | SHAPE interim message handling system | STC TN-155 |
| SHNMO | SHAPE host nation management office | |
| SHOC | Headquarters Operations Centre | |
| SHORAD | Short Range Air Defense | |
| SHORADOC | SHORAD Operations Center | |
| SI | Supporting Interrogator | |
| SIA | Stable Implementor Agreements | |
| SIC | Subject Indicator Code | Source Identification Code |
| SICAS | SSR Improvement and Collision Avoidance System | |
| SICASP | SSR Improvement and Collision Avoidance System Panel | |
| SICF | FR tactical ADP CCIS | |
| SID | signalling IF device | |
| SID | Standard Interface Device | |
| SID | subscriber identification | |
| SIDL | SOSTAS interoperable data link | |
| SIE | Standard Interface Equipment | |
| SIEM | SSR/IFF Environment Model (UK) | |
| SIF | Selective Identification Feature | |
| SIG | Special Interest Group | |
| SIGINT | SIGnal INTelligence | |
| SII | secondary image interface | |
| SILS | standard for interoperable LAN security | |
| SINCGARS | single channel ground/air system | |
| SINS | Ship Inertial Navigation System | |
| SINS | southern improvement NADGE sites | |
| SIP | Secure Interface Profile | |
| SIP | Security Investment Programme | |
| SIR | Specific Information Requirement | |
| SISRS | System Interconnection Security Requirement Statement | |
| SISSIM | SSR/IFF system Simulator | |
| SITREP | SITuation REPort | |
| SL | starting line | |
| SLAR | Side Looking Airborne RADAR | |
| SLBM | Submarine Launched Ballistic Missile | |
| SLC | Side Lobe Cancellation | |
| SLCM | Sea-Launched Cruise Missile | |
| SLCMB | System Level Configuration Management Board | |
| SLF | signal line filter | |
| SLIP | serial line internet protocol | |
| SLM | Standard Length Message | |
| SLOC | Sea Line Of Communications | |
| SLS | Side Lobe Suppresseion | |
| SLWPG | Senior Level Weapons Protection Group | NATO Committee |
| SMA | System Management Authority | |
| SMA | Signal Message Address | |
| SMA | Situation Monitoring and Assessment | |
| SMAA | submarine movement advisory authority | AC/317-N/889 |
| SMAP | system management application process | |
| SMC | staff message centre | |
| SMC | Station Monitoring and Control Center | |
| SMDC | SHAPE message distribution centre | STC TN-155 |
| SMDC | signal message distribution centre | Ex Strong Resolve 95 |
| SMDC | software management and developing centre | |
| SMF | Special Military Features | |
| SMF | spectrum management facility | |
| SMG | standard mail guard | |
| SMI | Structure of Management Information | |
| SMIS | SHAPE management information service | |
| SMMDC | staff message mail distribution centre | |
| SMR | secure message router | |
| SMTP | Simple Mail Transfer Protocol | IETF |
| SN | sub-network | |
| SNA | system network architecture | |
| SNAC | subnet access controller | STC CSNI final report 22/9/95 |
| SNAcP | Subnetwork Access Protocol | |
| SNACP | subnetwork dependent access control | STC CSNI final report 22/9/95 |
| SNAD | secure message router | |
| SNDC | Subnetwork Dependent Convergence | |
| SNDCP | Subnetwork Dependent Convergence Protocol | |
| SNF | Short-range Nuclear Forces | |
| SNF | Standing Naval Force | |
| SNI | switched network interconnection | |
| SNICP | Subnetwork Independent Convergence Protocol | |
| SNIG | Switched Network Interconnection Gateway | |
| SNIP | switched network interconnection project | |
| SNIRP | subnetwork independent header reduction protocol | STC CSNI final report 22/9/95 |
| SNLC | Senior NATO Logisticians' Conference | NATO Committee |
| SNMP | Simple Network Management Pool | IETF |
| SNPA | Subnetwork Point of Attachment | |
| SNPDU | subnetwork protocol data unit | STC CSNI final report 22/9/95 |
| SNPS | switched network pilot study | |
| SNR | switched network rationalisation | |
| SNS | secure network server | |
| SNTF | Subnetwork Test Facility | |
| SO | special operations | |
| SO | staff officer | |
| SO | Standardisation Objective | |
| SOB | Space Order of Battle | |
| SOC | Sector Operations Center | ACCS |
| SOFA | Status Of Forces Agreement | |
| SOHO | site operational hand-over | |
| SOI | Statement of Intention | |
| SOI | statement of interest | |
| SOL | sequence order list | STC CSNI final report 22/9/95 |
| SONET | synchronous open network | STC CSNI final report 22/9/95 |
| SONOR | South Norway | |
| SOP | Standing Operating Procedure | |
| SOR | Statement Of Requirement | |
| SORPROS | Stand-Off RADAR programmes studies | |
| SOSE | shipboard open systems environment | |
| SOSTAS | stand-off surveillance and target acquisition centre | |
| SOW | schedule of work | |
| SOW | Statement Of Work | |
| SP | Session Protocol | |
| SP | sub-panel | |
| SPACE | Scenario Preparation and Coverage Evaluation | |
| SPADOC | space defence operations centre | |
| SPAG | Standards Promotion and Application Group | |
| SPARC | Scalable Processor Architecture | |
| SPC | Senior Political Committee | NATO Committee |
| SPC(R) | Senior Political Committee (Reinforced) | NATO Committee |
| SPECAT | SPEcial CATegory | |
| SPETZNAZ | Soviet special forces | |
| SPF | special purpose force | |
| SPI | Special Position Identification | |
| SPN | self protecting node | |
| SPOAC | systeme de planification de l'OTAN pour armement conventionnel | |
| SPOD | sea port of debarkation | |
| SPOE | Sea Port of Entry | |
| SPP | Special Purpose Processor | |
| SPS | special purpose segment | AC/317/SEC/95/47 |
| SQL | structured query language | |
| SQOC | Squadron Operations Center | ACCS |
| SR | Service Request | |
| SR | Southern Region | |
| SRB | Senior Resource Board | NATO Committee |
| SRB | Source Recommendation Board | |
| SRBM | short-range ballistic missile | |
| SRCCS | short range communications control station | |
| SRI | System Replay and Investigation | |
| SRIXS | Strong Resolve information exchange system | Ex Strong Resolve 95 |
| SRS | security release station | |
| SRS | Security Requirements Statement | |
| SRT | security release terminal | |
| SS | Session Service | |
| SSADM | consultancy work on life cycles | |
| SSAP | Session Service Access Point | |
| SSC | Service Support Center | |
| SSC | SHAPE support centre | |
| SSC | software support centre | |
| SSC | system support centre | |
| SSE | Specific Services Entity (Umsetzung Mode S Protokolle) | |
| SSF | Sub-Strategic Forces | |
| SSI | System Software Interface | |
| SSIP | sub-system integration programme | |
| SSIXS | Submarine Satellite Information Exchange System | AC/317(WG/1)(SG/2)N/202 |
| SSL | Secure Sockets Layer | ACE ACCIS core cap specs |
| SSM | spread-spectrum modulation | |
| SSM | Surface-to-Surface Missile | |
| SSMA | spread-spectrum multiple access | |
| SSO | site security officer | |
| SSO | System Security Officer | |
| SSP | Scheduled Strike Programme | Nuclear Operations |
| SSP | Source Selection Plan | |
| SSR | Secondary Surveillance Radar | |
| SSRS | system-specific security requirements statement | Strong Resolve 95/ACE ACCIS core caps |
| SSSB | Ship-Shore-Ship Buffer | |
| SST | Sub-Stratigic Trident | |
| SSVCS | SACEUR's SV conference system | |
| STA | SUNG trusted application | |
| STAMINA | Standard Automated Message Interface for NATO ACCIS | |
| STAN | Status of own Air Force (User Function) | |
| STANAG | STANdardisation AGreement | |
| STANAVFORCHAN | STAnding NAVal FORce CHANnel | |
| STANAVFORLANT | STAnding NAVal FORce atLANTic | |
| STANAVFORMED | STAnding NAVal FORce MEDiterrannean | |
| STAR | SCOPE trusted automatic router | |
| STAR | Studies, Test and Research (EUROCONTROL) | |
| STARRNET | static radio relay network | |
| STARS | STC adaptable RADAR / EW simulator | |
| START | STrategic ARms Reduction Talks | |
| STC | SHAPE Technical Centre | Subsumed within NC3A |
| STCA | Short Term Conflict Alert | |
| STCW | Short Term Conflict Warning | |
| STE | Signalling Terminal Equipment | |
| STEP | standard for the exchange of product model data | |
| STEP | synchronous transport evolution programme | SIEMENS |
| STG | strategic to tactical gateway | |
| STGC | strategic to tactical gateway concept | |
| STILS | SHAPE Infrastructure Listing System | |
| STM | synchronous transfer mode | |
| STN | Switched Telephone Network | |
| STRADIS | structured analysis design and implementation of B264 information system | NACISA USD 23.01.00(93)01 |
| STRICOM | US army's simulation, training and instrument. command | |
| STRIKFORSOUTH | STRIKing FORce SOUTHern europe | |
| STS | Stable Time Subfield | |
| STVF | System Test and Valdation Facility | |
| SU | Sole User | |
| SUBOPAUTH | submarine operation authority | AC/317-N/889 |
| SUCOC | Succession of Command | |
| SUF | Special User Function | |
| SUNG | secret to unclassified network guard | |
| SUNI | shared usage of NATO infrastructure | |
| SV | secure voice conferencing | |
| SVC | secure voice conferencing | CT |
| SVC | Switched Virtual Circuit | |
| SVGA | Super Video Graphics Adapter | |
| SVMC | secure video-mapping conferencing | CT |
| SVP | site verification programme | |
| SVTC | secure video tele-conferencing | CT |
| SW | software | |
| SW | special weapons | |
| SWASP | SHAPE wartime application SW project | |
| SWG | special working group | |
| SWG | standard WWMCCS guard | |
| SWHQ | Static War Headquarter | |
| SWI | sensor/warning installations | AC/317-N/798 |
| SYSCO | System Supported Coordination | |
| SYSCON | system control |