WWII soldiers did one tour...from the day they signed up until the war was over. My father-in-law went in 1942 and came home in September of 1945. Everyone was an American not a “hyphenated” American.
Some of you seem to be confusing being somewhere besides America with being in combat. Our troops today and even in Vietnam often saw more continuous combat than our guys in WWII.
By the way my father was in from 1939 to 1945 and barely saw America during that time.