How did electronic surveillance systems help commanders gather information about enemy forces?

Electronic surveillance systems allow commanders to gather critical intelligence by monitoring the electromagnetic spectrum, a practice central to electronic warfare. Through signals intelligence (SIGINT), military forces intercept, process, and analyze foreign communications and electronic emissions to gain insight into enemy strategies, weaknesses, and capabilities.12

Commanders utilize several specific methods to gather this information:

• Communications Intelligence: By intercepting enemy radio transmissions or other messaging, commanders can uncover strategic plans and operational movements.23
• Electronics Intelligence (ELINT): Analysts examine non-communication electromagnetic emissions from weapons or radar systems to identify the purpose and technical specifications of enemy hardware.2
• Telemetry Intelligence: By intercepting data signals from foreign weapons tests, such as ballistic missiles, intelligence agencies can calculate performance metrics like range and accuracy.2
• Electronic Support Measures (ESM): These systems provide real-time data for threat recognition, targeting, and homing, which helps commanders avoid enemy detection or prepare countermeasures.1

These systems, ranging from radio direction finders to advanced satellite networks, enable the rapid collection of data that is essential for modern military decision-making.43