Between 1940 and 1956 much of Cumuto was part of the American army base known either as Fort Read or Wallerfield; the area was leased to the United States as part of the Destroyers for Bases Agreement.
: An Army Air Force airfield (Beane Army Airfield (later AFB)) (closed 1949)
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The Lend-Lease program of the 1940 was enabled by 99-year lease of British bases on several islands (Gander International Airport in Newfoundland) by the Destroyers for Bases Agreement.
The government regained possession of the island when the United States was leased areas in Trinidad under the Destroyers for Bases Agreement in 1940 during World War II.
In 1940 Winston Churchill and Franklin D. Roosevelt agreed to an exchange of American destroyers for access to British naval bases in the Atlantic, including Newfoundland.