Contestável ( Portuguese: to Contest) was a magazine published in Lisbon, Portugal, in the 1970s. [1] The magazine was published by RAL 1, [1] which was a left-wing light artillery regiment. [2] The group was also known as Soldiers of the Light Artillery Regiment. [3] It was one of the significant groups in the formation of Armed Forces Movement and the Carnation Revolution in 1974. [4]