Argentina Brigada Halcon Seccion Fuerzas Especiales UELCON Australia TAG/OAT ACT SOT NSW SPG NT TRG QLD SERT SA STAR TAS SOG VIC SOG WA TRG Austria GEK "Cobra" Belgium ESI Brazil 1st SF Btn Canada HRP ERT OCRPS Tactical Team RCMP ERT Chile UAT GOPE Colombia AEFU UNASE England D-11 France EPIGN GIGN GIPN RAID Finland Osasto Karhu Germany GSG-9 SEK Greece EKAM Hong Kong SDU Israel Ya'ma'n Italy GIS NOCS Japan Special Attack Team Korea Unit 868 Netherlands BBT BSB New Zealand Armed Offender Squad (AOS) Special Tactics Group (STG) Portugal GNR Special Operations Platoon GOE Singapore STAR Spain GAR GEO UEI Sweden ONI Venezuela BAE

Over the course of the 20th Century the world's various law enforcement agencies have formed a number of specialist units to help them effectively maintain order within the boundaries of their nations. These units are tasked with operating in difficult, or restrictive terrain, conducting emergency rescues, protecting their country's diplomats from harm, countering narcotics traffickers, and responding to terrorist threats.