Slight temporal confusion

Rico says he's been working on a Civil War timeline using his Civil Wargasm list of events, and transcribed a post-Gettysburg event as the "NVA moving into Maryland" when, of course, it should have been the "ANV moving into Maryland".
(For those too young to remember Vietnam, the North Vietnamese Army (thus NVA) were the bad guys in that war, whereas the Army of Northern Virginia (thus ANV) was the Union's enemy in the Civil War...)