Corrected entry: When the 37s are removed from stasis, the Japanese WWII pilot says that they are all speaking Japanese. Janeway explains that her communicator is a language translator and that is why he is hearing them speak Japanese. That is not how the universal translator operates. It has to be set to the language/dialect you require. Voyager's UTs are set to translate into English. The Japanese soldier would not have heard them speaking Japanese unless they specifically set a UT to do so just for him. This is a common error in many episodes as the aliens Voyager's crew encounters down on their home planets don't utilize UT's. So, in reality, the Voyager crew would understand them but they would not understand the Voyager crew.