I was reading some of the threads on financial matters related to travel and I read about banks freezing peoples' cards when it seems that they're being used abroad, possibly illegally?

Well, what about ATM/debit cards? If I use my BoA card at a Deutsche Bank ATM in Germany, will they do something weird? Should I tell BoA in advance, just so they know? Or can I just use my card in Germany and know that it won't be frozen or anything? Just curious. Thanks for your help, guys!