Civil war breaks out in the Dominican Republic when Colonel Francisco Caamaño overthrows the triumvirate that had been in power since the coup d'état against Juan Bosch.

The Dominican Civil War, also known as the April Revolution, took place between April 24, 1965, and September 3, 1965, in Santo Domingo, Dominican Republic. It started when civilian and military supporters of the overthrown democratically elected president Juan Bosch ousted the militarily-installed president Donald Reid Cabral from office. The second coup prompted General Elías Wessin y Wessin to organize elements of the military loyal to the dictator Reid ("loyalists") and launch an armed campaign against the "constitutionalist" rebels.