Brace yourself for a journey through the bloodiest battles ever fought. From ancient clashes to modern conflicts, which ones were the deadliest? First up, the Battle of Stalingrad in W. Over two million total casualties, soldiers fought hand-to-hand in the ruined city for months. Next, the Battle of Verdund in W.W.I. 700,000 dead in 10 months of relentless artillery bombardments and charges into no man's land. Pure hell, the ancient Battle of Changping in China. 260 BC, Chin Army buried 400,000 surrendered Zhao soldiers alive, a massacre of epic proportions. Finally, the siege of Baghdad in 1258, Mongols slaughtered 200,000 civilians. Rivers ran red with blood, a grim reminder of humanity's capacity for violence.