It is responsible for counter-terrorism, sub-unit of the Départment du Renseignement et de la Sécurité (DRS). It is based in Algiers and has a base at Blida, 50 km (31 miles) from Algiers.
The Grouping of special intervention (GIS) made trainings very elaborate with several training courses in various domains (assault, sniping, aircraft, squadbomb) to the Officers' training school of the special troops ( EATS) in Algeria, without forgetting the training in the highly-rated of the groups Alpha of Russia. The men of the GIS are introduced to the Ju-Jitsu art of Japanese fight and to the Kuk Sool Won art of Korean fight, but in a purely military aspect. With that outfit of trainings and are experiment on the ground the GIS became one of the units the most experimented by the world and recognized by the various tactical groups in the field of counter-terrorisms by the point where the G.I.S was recommended by the USSOCOM to form several African and European groups.