Want this question answered?
The US Civil War Battle of Antietam was the bloodiest single day of fighting in the US Civil War. 10,000 Confederate and 12.000 Union were killed or wounded. No American battle prior to or afterwards into modern day history created so many casualties.
In July & August of 1931 around 3 million people died from a flood in China. That was over a period of weeks, rather than a single day. January 23, 1556, 830 thousand people died in an earthquake in China. That would probably represent the single bloodiest day in human history. The firestorm created in Tokyo, Japan March 9, 1945 claimed about 97,000 lives. For a more protracted period of time, 8:15 (local time) Monday morning, August 6th, 1945, somewhere from 120 to 140 thousand Japanese were killed by the first nuclear weapon used in war.
Antietam - band - was created in 1984.
Antietam Academy was created in 2011.
Antietam Avenue Bridge was created in 1930.
Antietam National Battlefield was created on 1890-08-30.
Combined Fleet was created in 1894.
Combined Insurance was created in 1922.
Combined Cadet Force was created in 1948.
Combined Bandurist Capella was created in 1935.
Combined Federal Campaign was created in 1961.
Talbot Combined School was created in 1969.