The history of the transition to civilian rule in Chile largely overlooks or marginalizes the role of the armed and confrontational forms of resistance to the dictatorship. This article traces the pre and post-coup history of the Left's engagement with armed forms of struggle and evaluates the effects their incorporation into the struggle against the dictatorship had upon the regime and the Reagan administration. It concludes that armed resistance was a major factor in determining US policy to Chile during the 1980s, and therefore played an important role in the transition as a whole.