Depends. My dad was a veteran of both world wars, and he never swore or used any racial epithets.
He drank, smoked, and got married a lot (for the time), but he would never, ever swear.
(I might swear like a sailor but I don't drink or smoke, and have been married to one woman for over 30 years. Pick your own poison.)
I was stating a fact based on personal experience. Being a left coasty, I find that northeasterners swear s great deal more and in their general speech, not just when mad.