Cuba during World War I

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The Republic of Cuba had maintained neutrality during much of World War I until German submarine warfare resumed on February 1, 1917. On April 7, one day after the United States entered the war, Cuba declared war on Germany and began to support the Allied war effort. Cuba also declared war on Austria-Hungary later that year, on December 16.

A draft law was enacted, and 25,000 soldiers were ready for shipment to France when the armistice intervened. A hospital unit of 100 Cuban doctors and nurses was equipped and sent to the Western Front (World War I).