The 442d Combat Team was activated in February 1943. The enlisted personnel was composed entirely of Americans of Japanese ancestry. Having been born in the United States, all of the men are citizens of the United States. Very few of them have ever been to Japan and most of them cannot speak Japanese. They are as thoroughly loyal as German Americans, Italian Americans, or any other American of foreign ancestry. A category, of course, into which all of us fall.
They do not like to be called "Japs" or "Jap Americans." They are either soldiers or Japanese Americans (without the hyphen) or Americans of Japanese ancestry; among themselves often "Buddaheads."
Source www.the442.org
