1. Military procedures involving the use of electromagnetic energy to determine, exploit, reduce, or to prevent the hostile use of the electromagnetic spectrum, and action which retains friendly use of electromagnetic spectrum.
2. Military action involving the use of electromagnetic and directed energy to control electromagnetic spectrum or to attack a military enemy.

Electronic warfare consists of three divisions: electronic attack, electronic protection, and electronic warfare support.

3. The use of an electromagnetic spectrum by using devices to attack enemy personnel and equipment or to defend against these procedures and techniques.
4. A military action intended to prevent the use of electromagnetic radiation by hostile forces or to keep and to exploit its use by friendly forces.

Electronic warfare includes electronic countermeasures and counter-countermeasures.

1. That division of electronic military warfare involving actions which are taken to search for, intercept, locate, record, immediately identify radiated electromagnetic energy, and to analyze radiated electromagnetic energy for the purposes of exploiting such radiations in support of military operations.
2. A division of electronic warfare involving actions ordered by, or under direct control of, an operational commander to search for, intercept, identify, and to locate sources of intentional and unintentional radiated electromagnetic energy for the purpose of immediate threat recognition.

An electronic warfare support that provides information which is required for immediate decisions or actions involving electronic counter measures, electronic counter-countermeasures, avoidance, targeting, homing, warfare operations, and other tactical military employment of forces.