| Abbreviation | Definition |
|---|---|
| IE | Independent Evaluation |
| IEA | Information Exchange Agreements |
| IEB | Independent Evaluation Briefing |
| IEB | Intelligence Exploitation Base |
| IEC | Imagery Exploitation Cell (within CARS) |
| IEC | International Electro-technical Commission |
| IED(s) | improvised explosive device(s) |
| IED(s) | improvized explosive device(s) |
| IEDD | Improvised Explosive Device Defeat |
| IEEE-CS | Institute of Electrical and Electronics Engineers Computer Society |
| IEF | Initial Entry Force |
| IEF | International Expeditionary Force |
| IEFT | Internet Engineering Task Force |
| IEG | International Elite Guard |
| IEI | Idiopathic environmental intolerances |
| IEL | Illustrative Evaluation Scenario |
| IEM | Installation Equipment Management |
| IEM | International Electronic Monitoring |
| IEMATS | Improved Emergency Message Automatic Transmission System |
| IEM-BARCIS | IEM Bar Code Inventory System |