MIVD (Militaire Inlichtingen- en Veiligheidsdienst / Dutch Military Intelligence and Security Service)

Security Service / Military Intelligence, Section 5 (MI5)

Secret Intelligence Service (SIS) / Military Intelligence, Section 6 (MI6)

Danish Security and Intelligence Service

military security service

branch (military/service branch, armed service)

army intelligence and security

European Strategic Intelligence and Security Center

NATO Security Principles for the Storage of Military Ammunition and Explosives

military traffic management and terminal service

observation and fields of fire, avenues of approach, key and decisive terrain,obstacles, and cover and concealment (OAKOC)

combat functions (warfighting functions WFF) - Command and Control; Intelligence; Fires; Movement and Maneuver; Protection; Sustainment

warfighting functions (WFF - command and control; intelligence; fires; movement and maneuver; protection; sustainment)

security agreement (information security, NATO)

security intelligence

tactical intelligence / combat intelligence

undeclared member of the intelligence or counter-intelligence agencies

Central Security Service (CSS)

Defense Security Service (DSS)

Federal Security Service of the Russian Federation (FSB)

security service

Security Service of Ukraine (SSU)

site security service

United States Air Force Security Service

sea surface drone (unique invention of Security Service of Ukraine - SSU)

airport security service

security courier service

antiaircraft artillery intelligence service

Foreign Intelligence Service (SVR)

intelligence service

technical service intelligence detachment

agent inside the intelligence service

agent with intelligence service