| Acronym | Meaning |
 | OC | Occitan Language (ISO 639-1 Code) |
| APOD | Aerial Port (Airport) Of Debarkation |
| MSDB | Multi Source Data Base |
| TAROT | T?lescope ? Action Rapide Pour Les Objets Transitoires (French |
| INSAR | Interferometric Synthetic Aperture Radar |
| RUSI | Royal United Services Institute For Defence Studies |
| SPAAG | Self-Propelled Anti-Aircraft Gun |
| MMCS | Machinist's Mate |
| NKVD | Narodnyi Komissariat Vnutrennikh Del (Russian People's Commissariat Of Internal Affairs) (1934-1954) |
| IRN | Iran (ISO 3166 Trigram) |
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