Operation Condor ( , also known as `` Plan Cóndor '' ; ) was a United States–backed campaign Military_operation of political repression and state terror involving Cause_to_be_included intelligence operations and assassination of opponents , officially and formally implemented Action in November 1975 by the right-wing dictatorships of the Southern Cone of South America .

Due to its clandestine nature , the precise number of deaths directly attributable to Operation Condor is highly disputed Quarreling .

Some estimates are that at least 60,000 deaths can be attributed Causation to Condor , roughly 30,000 of these in Argentina , and the so-called `` Archives of Terror '' list 50,000 killed Killing , 30,000 disappeared and 400,000 imprisoned Arrest .

hundreds , or thousands , of such persons—the number still has not been finally determined—were abducted Kidnapping , tortured Bodily_harm , and murdered Killing in Condor operations . ''

Condor 's key members were the governments in Argentina , Chile , Uruguay , Paraguay , Bolivia and Brazil .

During the mission one Halifax-and-Horsa combination was shot down Use_firearm by German Focke Wulf Condor long-range patrol aircraft .

On the other side , both Nazi Germany and Fascist Italy supplied Supply Franco with air cover and armoured units for his assault on Madrid , while the Luftwaffe units in Spain , the Condor Legion , were commanded Control independently of Franco 's officers .