Over the next two-thirds of a century Santo Domingo and the Dominican Republic went through many revolutions and power changes. Santo Domingo would experience the first of two U.S. invasions in 1916 when different leaders fought for presidential power and control of the city. The United States intervened, instituting a military leader, Harry Shepard Knapp. U.S. Marines and Dominicans clashed in Santo Domingo on October 24–25, 1916, resulting in the deaths of two U.S. Marines and three Dominicans. Eventually the Americans withdrew in 1924.