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 famous in history for being the bloodiest battle of the American Civil War. Both sides incurred heavy losses of human and animal life and property. The victorious army itself lost 23,049 out of a total beginning strength of approximately 85,000-88,000.