Complex sentence: Wilson would go on to share an apartment at 21 East 15th Street in New York City with E.E. Cummings, and enlist in the U.S. Military during 1917-1919, joining John Dos Passos and E.E. Cummings and other Harvard students in France.
Split into simpler sentences: Wilson would go on to share an apartment at 21 East 15th Street in New York City with E.E. Cummings. He enlisted in the U.S. Military during 1917-1919, joining John Dos Passos and E.E. Cummings and other Harvard students in France.