Battle of Changping

Battle of Changping in 260 BC was a decisive victory of the state of Qin of China over Zhao during the Warring States Period. Large number of Zhao's POW were massacred after being sieged for almost 2 months. With this victory, Qin had established military superiority over other states. More campaigns and battles ensued, especially in the conquest of the state of Chu. Nevertheless no matter how bloody these military operations would be, Qin's final victory was guranteed.