The use of Japanese-Americans causes a cringe.  To be historically correct, Japanese-Americans are the Issei's, the first generation Japanese who came from Japan and adopted the United States as their Country.  All who followed are Americans of Japanese ancestry.  The Nisei and on, as I a Yonsei.  The WWII Nisei veterans were AJA's, or Americans of Japanese ancestry.  Those WWII Nisei veterans were in combat as Americans and excelled.  There were another group, the Kibei's, or AJA's sent back to Japan as children for their education and returned to the United States prior to the War.  Had to post the correction.  Go For Broke.