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.
But the bloodiest battle in US history could also mean the most people of all nationalities killed in a battle involving a major commitment of American troops, which would be the 150,000 Americans and Japanese killed at Okinawa.