Peaceful Costa Rica, The First Battleground: The United States and the Costa Rican Revolution of 1948
In February 1948 a spirited presidential race sparked a political powderkeg in normally tranquil Costa Rica. The opposition candidate, Otilio Ulate, unexpectedly defeated former president Rafael Angel Calderón. Calderón's National Republican Party, the Communist Partido Vanguardia Popular (Vanguard), along with incumbent President Teodoro Picado immediately overturned the results. The opposition responded by launching an armed struggle to install Ulate in power. Led by José Figueres, the rebels defeated the government army and its auxiliaries composed primarily of calderonista and vanguardista militiamen. In late April Figueres victoriously entered San José and established a revolutionary junta that ruled the country for eighteen months. At the end of this period, he stepped down and allowed Ulate to serve his full four-year term.