There are bullet-ridden and blood-stained flags in San Francisco's City Hall that beg to differ and were carried by this city's sons to different wars and conflicts. I cried when I first saw them.
This is a gentle reminder that when someone says "Place X has known peace for period Y" they mean "There has been no significant military action in Place X for period Y.". People from Place X can engage in military action in other places during period Y, but Place X is still in a period of peace.