"I not so sure I want a bowdlerized version of World War II."
Exactly! War sucks. Men swear while risking their lives in the military. Sanitizing warfare does nobody any good. We need to know the reality of fighting for just causes.
Frankly, if I had children young enough not to have already been exposed to curse words, I would consider them too young to watch a documentary about warfare. If they were old enough to watch such a documentary, I would assume that those words were familiar to them from the schoolyard.
The nanny folks who think that everything on television should resemble a 1950s sitcom need to rethink their position. Sometimes, accurate representations of historical events are ugly.