1965: Invasion of Dominican Republic: Operation Power Pack, The United States intervened to protect lives and property during a Dominican revolt and sent 20,000 U.S. troops as fears grew that the revolutionary forces were coming increasingly under Communist control.[RL30172] A popular rebellion broke out, promising to reinstall Juan Bosch as the country's elected leader. The revolution was crushed when U.S. Marines landed to uphold the military regime by force.