| Acronym | Meaning |
 | AT | Anti-Tank -Ashmore And Cartier Islands (FIPS 10-4 Territory Code) - Austria (ISO 3166 Digram) -Advanced Technology (IBM Personal Computer/AT) |
| SOCOM | (U.S.) Special Operations Command |
| MSO | Multiple System Operator |
| URD | Urdu Language (ISO 639-2 Code) |
| NAI | Named Area Of Interest -Network Access Identifier |
| OIOC | Oriental & India Office Collections (in The British Library) |
| SPOD | Sea Port Of Debarkation |
| HVU | High Value Unit (military) |
| VI | Vietnamese Language (ISO 639-1 Code) |
| MM | Millimetre |
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