(CNN) -- An Argentinian court found two former dictators, among others, guilty on Thursday of systematically stealing babies from political prisoners during the country's "dirty war" and giving them new identities. Jorge Rafael Videla, who ruled as dictator from until 1976 to 1981, was sentenced to 50 years in prison. Gen. Reynaldo Benito Bignone, who ruled the country from June 1982 until the nation's return to democracy in December 1983, was sentenced to 15 years in prison.