information gathering

the operation of gathering information about an enemy

the act of keeping a secret watch for intelligence purposes

intelligence of all types and forms of immediate interest; usually disseminated without delays for evaluation or interpretation

intelligence that is required for the planning and conduct of tactical operations

intelligence that is required for forming policy and military plans at national and international levels

intelligence information gathered from communications intelligence or electronics intelligence or telemetry intelligence

an intelligence operation so planned and executed as to insure concealment

the collection of intelligence openly without concealment

the act of reconnoitring (especially to gain information about an enemy or potential enemy)

intelligence activities concerned with identifying and counteracting the threat to security posed by hostile intelligence organizations or by individuals engaged in espionage or sabotage or subversion or terrorism