windtalkers is an amazing ww2 movie starring Nicolas cage. it was mainly about the Navajo Indians translating for the U.S army, the one language the Japanese could not understand. overall great war movie.
Very interesting plot with a surprise twist near the end. Seems like accurate 1300's France representation, too. Fun to watch the romantic side, too, and has some current big names in roles from a few years before they were widely known.