John Dos Passos (1896?1970) was a writer, painter, and political activist. His service as an ambulance driver in Europe at the end of World War I led him to write Three Soldiers in 1919, the first in a series of works that established him as one of the most prolific, inventive, and influential American writers of the twentieth century, writing over forty books, including plays, poetry, novels, biographies, histories, and memoirs.