How information, secrecy, maps, signals, and analysis influenced major decisions.
Leaders have always tried to understand an opponent's plans and protect their own. Military intelligence includes gathering information, checking its reliability, interpreting patterns, and communicating conclusions to decision-makers.
Observing terrain, movement, and conditions.
Learn MoreFlags, telegraph, radio, and electronic communication.
Learn MoreProtecting messages and historical codebreaking.
Learn MoreTurning incomplete information into useful judgments.
Learn MoreScouts, maps, observation balloons, aircraft, satellites, and other tools have helped leaders understand geography and movement. Reliable observation can prevent dangerous surprises.
Military communication evolved from runners, drums, fires, and flags to telegraph, radio, secure digital networks, and satellites. Faster communication allowed larger forces to coordinate across greater distances.
States have long used ciphers and codes to protect sensitive messages. Historical codebreaking, including Allied work against Axis encryption during World War II, showed how mathematics and language skills could influence major events.
Information can be incomplete, outdated, or misleading. Good intelligence work compares multiple sources, considers uncertainty, and avoids treating assumptions as facts.