United Front for Popular Resistance

The United Front for Popular Resistance (: Frente Unida para Resistencia Popular) also known as the Zacores or simply as the FURP, was a  of several  organizations formed in 1967, the largest three being: The FURP was one of the main factions in the Arbenz Revolution, starting its armed campaign against the Federal Republic of Arbenz a year after its inception. Initially a purely guerrilla force, it was able to form units of conventional and guerrilla units across the country tied to its respective organization, controlling swathes of territory in the rural areas. The FURP with extensive foreign material support eventually was able to cripple the Federal Republic and finally capture the capital of Niguernon in 1991 during an all-out offensive on its largest populated areas.
 * The Green Liberation Army (ELV),
 * The National Workers Army (ENO),
 * The Revolutionary Force (FR).

Armed Struggle
In 1969 in the time leading up to the Arbenz Revolution, tensions among the rural peasants and urban workers reached their height as several anti-labor laws were passed that restricted unions, blacklisted many prominent labor organizers, and banned several popular leftist parties. These events caused the militant FURP to swell in numbers as the normally apolitical workers and peasants flocked to the FURP. With these new numbers and rising military violence as the FRA began to receive aid and training by New Valentina, the FURP convened one of the most historic meetings in its history. On April 10th, 1969, representatives of three of the largest sects of the FURP agreed to begin an armed campaign against the FRA. On April 12th, 1969, the FURP initiated their first offensive and took parts of the Pazaro and Chiqisalo departments in the west.

Organization
THe FURP is headed by the Consejo de Operaciones del Frente (Council for Front Operations) or COF. It is the mobile headquarters of the FURP and the main point of contact between the three guerrilla organizations of the FURP. The COF is based around a council, where approximately three military leaders of the guerilla organizations sit, making a council of nine. The purpose of the COF is to properly coordinate inter-organizational operations and to set operational standards on strategy, tactics, and equipment. The COF was not static and its members were constantly on the move, meeting in secret once every several years.