WASHINGTON -- They may come from the land of cotton, but "Dixie" won't be playing when 23 Civil War re-enactors march down Pennsylvania Avenue during the presidential inaugural parade. They'll be wearing Union blue, not Confederate gray. Of course, the selection of these re-enactors from Georgia was hardly random. The 21st Ohio Volunteer Infantry Regiment, which they represent, once included Capt. Samuel Cheney, great-grandfather of Vice President Dick Cheney. During an October 2002 visit to the Chickamauga battlefield in Georgia where the regiment gained historical fame, the vice president - a Civil War buff - learned not only that a...