Which statement best defines electronic warfare (EW)?

• A. Electronic warfare (EW) is primarily concerned with actions that degrade, disrupt, or deceive enemy use of the electromagnetic spectrum
• B. EW Only Pertains To Ground Forces
• C. EW Is Exclusively About Data Encryption
• D. EW Is A Term For Storm Chasing

Answer: (A)

Electronic warfare focuses on actions that degrade, disrupt, or deceive an adversary’s use of the electromagnetic spectrum. This spectrum covers radio communications, radar, navigation, and sensing, and EW aims to deny or degrade an opponent’s ability to use these tools while protecting one’s own systems. Examples include jamming radar or communications to blind or mislead an opponent, and techniques to shield friendly systems from such interference.

One option narrows EW to ground forces, but EW operates across air, sea, land, space, and even cyber domains, not just on the ground. Another option centers on data encryption, which is about securing information, not selectively interfering with the electromagnetic environment. A third option about storm chasing is unrelated to military electronic operations. Therefore, the best definition is the emphasis on degrading, disrupting, or deceiving the enemy’s use of the electromagnetic spectrum.