A colleague and I will be in Zurich in early October on business. We may have only one "tourist day" for the whole trip. We're both into WWII history and would like to hop on a cheap train (assuming they still exist) and take a day trip outside Switzerland.
Looks like Innsbruck and maybe Munich are pretty close at around 4 hours each way.
What would you recommend we see (if at all possible) that is a good day-trip from Zurich and not terribly expensive to get there and away?