In WWII, and other times too, bars like this were put off limits to military. I think most were in foreign countries, but what the heck--parts of DC are both a foreign country and a war zone. Bet they would not like to lose ALL their military patrons.
And, I, too, think you don't get barred because of the actions of others. What if they tried to bar blacks because some rowdy blacks caused trouble there--never happen, of course, but it holds just as true for these marines as for blacks. This is profiling.
vaudine
has the bar issued a statement?