There was also discrimination against German Americans and Italian Americans due to the fact that Germany and Italy were enemy countries during World War I (Germany) and World War II (Germany and Italy). This resulted in a sharp decrease in German-American ethnic identity and a sharp decrease in the use of German in the United States following World War I, which had hitherto been significant, and the internment of German and Italian Americans during World War II; see also World War I anti-German sentiment.