 Back in Lisbon , the ' Armed Revolutionary Action ' branch of the Portuguese Communist Party , which was created in the late 1960s , and the Revolutionary Brigades ( BR ) , a left @-@ wing organisation , worked to resist the colonial wars . They had carried out multiple sabotages and bombings against military targets , such as the attack on the Tancos air base that destroyed several helicopters on March 8 , 1971 , and the attack on the NATO headquarters at Oeiras in October of the same year . The attack on the Portuguese ship Niassa illustrated the role of the colonial wars in this unrest . Niassa ( named after a Mozambican province ) was preparing to leave Lisbon with troops to be deployed in Guinea . By the time of the Carnation Revolution , 100 @,@ 000 draft dodgers had been recorded . 
 Back in Lisbon , the ' Armed Revolutionary Action <a href='null_genetive' title='1'><mark>'</mark></a>branch of the Portuguese Communist Party , which was created in the late 1960s , and the Revolutionary Brigades ( BR ) , a left @-@ wing organisation , worked to resist the colonial wars . They <a href='been_done' title='2'><mark>had</mark></a> carried out multiple sabotages and bombings against military targets , such as the attack on the Tancos air base <a href='null_relcl' title='3'><mark>that</mark></a>destroyed several helicopters on March 8 , 1971 , and the attack on the NATO headquarters at Oeiras in October of the same year . The attack on the Portuguese ship Niassa illustrated the role of the colonial wars in this unrest . Niassa ( named after a Mozambican province ) was preparing to leave Lisbon with troops to be deployed in Guinea . By the time of the Carnation Revolution , 100 @,@ 000 draft dodgers <a href='been_done' title='4'><mark>had</mark></a> been recorded . 
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