 There he lived in a small boarding house in Brooklyn, found work as a clerk in the Manhattan law firm of Nevins, Brett and Kellog, and attended plays.On June 5, 1917, March registered for military service, a little over a month after the U.S. entered World War I.He volunteered for the U.S. Marines on July 25, and after completing his training on Parris Island was shipped to France in February 1918.