One of the seven major Warring States, formed in 403 BC alongside Han and Wei from the partition of Jin; strengthened by King Wuling's cavalry and military reforms before a crushing defeat by Qin at the Battle of Changping (260 BC).
Conquered by Qin in 222 BC.
Covers Zhao's military reforms under King Wuling and the Qin-Zhao rivalry that culminated at Changping.