| Acronym | Meaning |
| WWI | World War I |
| GRN | GuaranĀ Language (ISO 639-2 Code) |
| C4I OR C?I | Command |
| NODEF | NATO Oceanographic Data Exchange Format |
| IRST | Infra-red Search And Track |
| MI | Malawi (FIPS 10-4 Country Code) - Michigan (postal Symbol) - Midway Islands (ISO 3166 Digram; Obsolete 1986) -Military Intelligence |
| ZH | Chinese Language (ISO 639-1 Code) |
| SE | Seychelles (FIPS 10-4 Country Code) - South-East - Sweden (ISO 3166 Digram) -Synthetic Environment - System Engineering |
| CAP | Combat Air Patrol - Civil Air Patrol - Common [Operating/Operational] Air Picture - Crisis Action Procedures - Common Agricultural Policy |
| AD | Air Defence -Andorra (ISO 3166 Digram) -Anno Domini (Latin |