Many countries around the world maintain military units that are specifically trained to cope with CBRN (Chemical, Biological, Radiological, Nuclear) threats.
Beside this specialized units, most modern armed forces undergo generalized basic CBRN self-defense training for all their personnel.
Army Navy Nuclear Biological Chemical Defense Special Joint Battalion (Ειδικό Διακλαδικό Λόχο Πυρηνικής Βιολογικής Χημικής Άμυνας - Eidikó Diakladikó Lócho Pyrinikís Viologikís Chimikís Ámynas)[56] Army Air Force Integrated Defence Staff National Disaster Response Force Central Industrial Security Force Central Reserve Police Force Border Security Force Islamic Revolutionary Guard Corps Inter-services Army Navy Air Force Army Army Reserve Army National Guard Navy Marines Air Force Coast Guard [207] Joint Army National Guard and Air National Guard