mandelbug definition: Noun (plural mandelbugs) 1. (computing) A software bug whose behaviour appears to be chaotic. ...
The bloodiest single day of battle was Antietam (26,134 casualties). The bloodiest battle, however - which lasted three days - was Gettysburg (51,112 casualties). July 21, 1861.
The Battle of Gettysburg is one of the best-known battles in American history. More than 50,000 soldiers became casualties in the bloodiest battle of the Civil War, fought in July 1863 around the small Pennsylvania town.