German immigration to Puerto Rico
…Colonel Rudolph W. Riefkohl, U.S. Army, played an instrumental role in helping the people of Poland overcome the 1919 typhus epidemic. Major General Luis R. Estéves Völckers, U.S. Army, became the first Puerto Rican and Hispanic to graduate from the United States Military Academy in 1915. Estéves Völckers also organized the…