Erich Maria Remarque was a German novelist. His landmark novel All Quiet on the Western Front (1928), based on his experience in the Imperial German Army during World War I, was an international bestseller which created a new literary genre of veterans writing about conflict. The book was adapted to film several times. Remarque's anti-war themes led to his condemnation by Nazi propaganda minister Joseph Goebbels as "unpatriotic". He was able to use his literary success and fame to relocate to Switzerland as a refugee, and to the United States, where he became a naturalized citizen.