United States Marines landed in Santo Domingo on May 15, 1916. Prior to their landing, Jimenes resigned, refusing to exercise an office "regained with foreign bullets". On June 1, Marines occupied Monte Cristi and Puerto Plata. They occupied Monte Cristi without meeting resistance, but at Puerto Plata they had to fight their way into the city under heavy but inaccurate fire from about 500 pro-Arias irregulars. During this landing the Marines sustained several casualties, including the death of Captain Herbert J. Hirshinger, the first Marine killed in combat in the Dominican campaign. Insurgent losses, while never accurately determined, were light.