Which Major and Commander of the Argentine National Gendarmerie was involved in a special military intelligence service of the Argentine Army that collected information on and infiltrated guerrilla groups, human rights organizations, coordinated killings, kidnappings, and other abuses?
Batallón de Inteligencia 601: The Batallón de Inteligencia 601 (Spanish for "601 Intelligence Battalion") was a special military intelligence service of the Argentine Army whose structure was set up in the late 1970s, active in the Dirty War and Operation Condor, and disbanded in 2000.
i don't know