Which is the bloodiest battle ever fought?

Question:

Which is the bloodiest battle ever fought?

by this i mean in 1 day , the most no of casulties occur on a battle field.not like the battle of somme or leningard which were faught over the period of many months or dropping of atom bombs on japan, that was not a battle.

Best Answer - Chosen by Asker: Supposedly the battle of Chalons was extremely massive claiming thousands of lives; but than again reports from these time periods are often wildly exaggerated. It was described as producing truely countless bodies. Some sources claim over 100,000 dead total for all sides of the battle.(Atilla himself supposedly had 300,000 men by himself; wildly exaggerated probably, but still a massive army.)

Another ancient canidate would be the battle of Cannae 79,000 Romans were defeated by a 50,000 man Carthaginian force losing around 48,000 men (Carthaginian troops took 8,000 prisoners after becoming sick of killing) Carthage lost 6,000 men. The gahstly total for the day was around 54,000 men.