This document discusses electronic warfare and is divided into three main sections: electronic attack, electronic protection, and electronic warfare support. Electronic attack involves jamming, deception, and destructive techniques to interfere with an enemy's use of the electromagnetic spectrum. Electronic protection techniques are used to protect friendly forces from electronic attack. Electronic warfare support passively detects and analyzes emissions to gather intelligence and provide situational awareness. Specific electronic warfare systems and techniques discussed include jamming, chaff, flares, anti-radiation missiles, frequency hopping, and ELINT/COMINT collection.