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 first major battle in the American Civil War to take place on Northern soil. It was the bloodiest single-day battle in American history, with almost 23,000 casualties. After this win for the North, Lincoln announced the Emancipation Proclamation. Emancipation Proclamation.