Forty-one Union troops are buried in the Battleground National Cemetery on Georgia Avenue NW. (Astrid Riecken/For The Washington Post)

If you’d like to chat even more about the Civil War, there’s a live discussion today at 1 p.m., where I’ll be taking questions along with Garry Adelman, the director of the Civil War Trust and a noted Civil War author, and Civil War cartographer Gene Thorp.