"Harold Koch Boysen"@en . . . . "1891-11-02Z"^^ . . "Boysen, Harold Koch"@en . . "1963-02-20Z"^^ . "American flying ace" . "1917Z"^^ . . "Lieutenant Harold Koch Boysen was a World War I flying ace credited with five aerial victories.Boysen joined the Royal Flying Corps in June 1917. After training, he was assigned to 66 Squadron to fly a Sopwith Pup. He would not have any success until the unit re-equipped with Sopwith Camels and transferred fronts from France to northern Italy. He scored a victory in December 1917. In January 1918, he crashed while landing in a fog, and was injured."@en . "1918Z"^^ . . . . "1891Z"^^ . "1963Z"^^ . . . .