D-Day was an attack on military targets, for a political objective, therefore it is terrorism.
You don't have to be in a standing army to attack a military target without being a terrorist. Are guerillas and insurgents all terrorists? Really? Just because you like the word terrorism, and like to randomly assign it to every bit of street violence, doesn't change the actual definition. I guess every street mugging is terrorism right?
Your pathetic attempt to insult me is one of the most foolish attempts I've ever read on the internet.