The new military government, self-named Proceso de Reorganización Nacional, initially tried to end the guerrilla's campaigns, but the nation rapidly descended into a state of civil unrest. Terrorist organisations and guerilla movements where often met with a mixture of state terror and general paranoia. The civilian population was now caught in a police state between a paranoid and brutal military dictatorship and violent dissident communist guerrillas. The PRN called this period the "Dirty War" — a term refused by jurists during the 1985 Trial of the Juntas. Batallón de Inteligencia 601 (the 601st Intelligence Battalion) became infamous during this period. It was a special military intelligence service set up in the late 1970s, active in the Dirty War and Operation Condor, and disbanded in 2000. Its personnel collected information on and infiltrated guerrilla groups and human rights organisations, and coordinated killings, kidnappings and other abuses. The unit also participated in the training of Nicaraguan Contras with US assistance, including from John Negroponte.