英語版 most devastating battles Battle of Baghdad in 1258 More war the history of warfare most lethal siege in history greatest casualty figures view article http://en.wikipedia.org/wiki/List_of_battles_by_casualties Source largest military operations bloodiest battles in the history of warfare http://en.wikipedia.org/wiki/List_of_battles_by_casualties 47,000 people died en en Source bloodiest battle Source 47,000 people died adding it all up. largest military operations English largest military operations English More war most lethal battle operations Source most costly in terms of casualties English Source largest military operations largest military operations most devastating battles largest military operations en.wikipedia.org... most lethal siege in history most devastating battles largest military operations largest military operations 47,000 people died bloodiest in the history of warfare A historical listing of the casualties