This work aims to explore the influence of a specific militarism, the progressive one, in the experience of one of the most emblematic groups in the New Left, the Uruguayan Tupamaros National Liberation Movement, as well as the Frente Amplio coalition in the same country. We suggest that, since the episode of the pre-coup of February 1973, this group was willing to converge with the military in an experience of the Velasco Alvarado type in Peru.