In 2017, Puerto Ricans battled economic hardship and the lasting effects of Hurricane Maria at home as they celebrated 100 years of American citizenship. On March 2, 1917, the Jones-Shafroth Act was passed by Congress, making the island a U.S. territory and guaranteeing citizenship to all Puerto Ricans born after April 25, 1898. With citizenship came all the requirements of citizenship: serving on juries, paying taxes, and being drafted for military service.
Just in time for World War I.
Welcome to the party, pal.
It was just twenty years after the United States usurped the island's Spanish rulers in the Spanish-American War and annexed Puerto Rico as a territory of the United States. By the end of the United States' participation in World War I, the Selective Service Act would draft some 2.8 million men, sending an estimated 10,000 troops to France every day. The U.S. Army had come a long way from the third-rate militia it was before the war. To meet the requirements of becoming a great, global power, it needed the manpower of one.
American territories, which at the time included Alaska, Hawaii, Guam, Puerto Rico, and others, were exempt from the draft. The legislature of Puerto Rico immediately asked Congress to extend conscription to American territories – namely Puerto Rico. But this was purely at the request of the Puerto Ricans.
Puerto Rican Cpl. Ricardo LaFontaine in 1917.
In all, some 236,000 Puerto Ricans from the island signed up for selective service for a potential draft notice. Of those, 18,000 would go on to serve in the war. But they weren't always welcome. African-American Puerto Ricans, like many minorities in the U.S., weren't entirely welcome and ended up in segregated units. For those Puerto Ricans not of African descent, they would be assigned to some regular units in the U.S. military. Still, President Wilson, in the face of discouragement from the War Department, created a Puerto Rican Division.
A full 70 percent of those Puerto Ricans who signed up for service in World War I were rejected for no other reason than the War Department didn't know what to do with them in a segregated Army. Despite this, there has long been a conspiracy theory that held Puerto Rico was only granted citizenship so they could fight in the war. If that were true, the U.S. would have sent a lot more Puerto Ricans than it did.