| 1. Radio Systems | These use the principles of electromagnetic radiation for the transmission of spoken or written communications. | They form the backbone of military communication. Various grades of radios exist, ranging from small portable devices to large, vehicle-mounted systems. |
| 2. Satellite Communication Systems | These use satellites for relay of communications. | They are essential for global-level communication, allowing instant transmission of information across large distances. Used for warfare operations, surveillance, navigation etc. |
| 3. Tactical Data Links | Data link is a method for exchanging digital messages between two or more entities in a network. | They allow the sharing of tactical information between units and platforms in real time, greatly enhancing battlefield awareness. |
| 4. Mobile Ad Hoc Network (MANET) | These are self-configuring networks with infrastructure-less mobile devices. | Used for rapid deployment in situations where no communication infrastructure exists. Useful in remote or hostile locations. |
| 5. HF, VHF, UHF Radios | These are radio frequency communication systems. | Used for short-range (VHF, UHF) and long-range (HF) line-of-sight communication, allowing direct communication between units in the field. |
| 6. Underwater Communication Systems | These are designed to function in aquatic environments. | Used for communication with submerged submarines or for conducting underwater exploration and warfare. |
| 7. Microwave Communication Systems | These use very high frequency, line-of-sight communication. | Often used for secure, high-bandwidth communication over relatively short distances. |
| 8. Optical Communication Systems | These use light (lasers) for transmission of data. | Used for secure, high-bandwidth communication. Unaffected by electromagnetic interference. |
| 9. Beacons and Flares | These are visual or infrared signaling devices. | Used for signaling, illumining and marking locations in the field. |
| 10. Field Telephones | These are robust, user-friendly voice communication devices. | Used for secure communication between fixed points, such as command posts. |
| 11. Radar Systems | These use radio waves to determine the range, angle, or velocity of objects. | Used for detection and tracking of aircraft, ships and other large objects. |
| 12. Sonar Systems | These use sound propagation to navigate, communicate or detect other vessels. | Used underwater for detection and tracking submarines or other underwater objects. |
