The following is the Nov. 14, 2022, Congressional Research Service report Defense Primer: Electronic Warfare.
From the report
Electronic warfare (EW), as defined by the Department of Defense (DOD), are military activities that use electromagnetic energy to control the electromagnetic spectrum (“the spectrum”) and attack an enemy. The spectrum is a range of frequencies for electromagnetic energy. EW supports command and control (C2) by allowing military commanders’ access to the spectrum to...
https://news.usni.org/2022/11/16/defense-primer-electronic-warfare