In April 1965, the United States launched a military intervention in the Dominican Republic amid political turmoil following a civil war that erupted after the ousting of President Juan Bosch in September 1963. Bosch, who had been the country's first democratically elected president since 1930, was overthrown in a coup led by a military faction. After Bosch's removal, a series of unstable governments took control, leading to increased violence and the potential for a Communist-led government, which raised alarm in Washington during the Cold War. To counter this perceived threat, President Lyndon B. Johnson deployed troops to the country on April 28, stating the need to prevent a Communist dictatorship and ensure the safety of American lives and property.The U.S. military operation, known as Operation Power Pack, began with the landing of approximately 42,000 troops at the request of Dominican political leaders, who were concerned about chaos in the aftermath of Bosch's ousting and the rise of leftist factions. The American troops quickly took control of key infrastructure and established a presence in the capital, Santo Domingo. The intervention sparked immediate controversy and criticism, both domestically and internationally, as it represented a significant exercise of American interventionist policies in Latin America. The situation developed into a complex conflict, as U.S. forces faced resistance from Dominican militias and local supporters of Bosch, who sought to restore democratic governance.Over the next few months, U.S. troops engaged in various military actions while also attempting to stabilize the political situation. After several months of occupation and despite occasional violence, the U.S. began withdrawing troops by September. The intervention officially ended in 1966 when a new government was established, but the episode left a lasting impact on Dominican politics and U.S.-Latin American relations, highlighting the contentious legacy of American intervention in the region.