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.
Tthe deadliest one-day battle of the Civil War was Antietam. The deadliest two-day battle was Chickamauga. The deadliest 3-day battle was Gettysburg, which also beats all ot â¦ her battles unless you consider the siege of Petersburg a battle.