In February 1963, a democratically elected government under leftist Juan Bosch took office but it was overthrown in September. On April 24, 1965, after 19 months of military rule, a pro-Bosch revolt broke out in Santo Domingo. The pro-Bosch forces called themselves Constitutionalists. The revolution took on the dimensions of a civil war when conservative military forces struck back against the Constitutionalists on April 25. These conservative forces called themselves Loyalists. Despite tank assaults and bombing runs by Loyalist forces, the Constitutionalists held their positions in the capital. By April 26, armed civilians outnumbered the original rebel military regulars. Radio Santo Domingo, now fully under rebel control, began to call for more violent actions and for killing of all the policemen.