 Do you know, back in the old, old, old days where these historians prefer to use C-E rather than A-D, when they put the year there, 900 C-E, Common Era. Because they're so smart, right? They don't like B-C. That's B-C-E, before the Common Era. What made it the Common Era, you dilettantes? That's just ridiculous. Anyway, get this one from Top War.