mandelbug definition: Noun (plural mandelbugs) 1. (computing) A software bug whose behaviour appears to be chaotic. ...
The 1st Texas Infantry lost 82 percent of its menduring the Battle of Antietam, the highest casualty rate for any Confederate regiment in one battle of the Civil War.
Indeed, some of the bloodiest fighting of the war (especially during the Overland Campaign in Spring 1864) occurred after July 1863. So the short answer to the first question is yes, we are guilty of looking backwards when we argue that Gettysburg was the decisive moment in the Civil War.