| Acronym | Meaning |
| RPD | Recognition-Primed Decision-making |
| ORBAT | Order Of Battle |
| AMSU | Association For Managers In Students' Unions - Aviation Mat?riel Screening Unit |
| WRT OR W/R/T | With Respect To Or With Regard To |
| RDO | Rapid |
| UNGEGN | United Nations Group Of Experts On Geographic Names |
| PER | Peru (ISO 3166 Trigram) |
| BH | Bahrain (ISO 3166 Digram) - Belize (FIPS 10-4 Country Code) |
| MX | Mail Exchange -Mexico (FIPS 10-4 Country Code; ISO 3166 Digram) -Missile EXperimental |
| SOAP | Simple Object Access Protocol |