Conquest of Kalinga
While the early part of Ashoka's reign was apparently quite bloodthirsty, he became a follower of the Buddha's teaching after his conquest of Kalinga (
The pretext for the start of the Kalinga War (265 BC or 263 BC) is uncertain. One of Susima's brothers might have fled to Kalinga and found official refuge there. This enraged Ashoka immensely. He was advised by his ministers to attack Kalinga for this act of treachery. Ashoka then asked Kalinga's royalty to submit before his supremacy. When they defied this diktat, Ashoka sent one of his generals to Kalinga to make them submit.
The general and his forces were, however, completely routed through the skilled tact of Kalinga's commander-in-chief. Ashoka, baffled at this defeat, attacked with the greatest invasion ever recorded in Indian history until then. Kalinga put up a stiff resistance, but they were no match for Ashoka's brutal strength. The whole of Kalinga was plundered and destroyed. Ashoka's later edicts state that about 100,000 people were killed on the Kalinga side and 10,000 from Ashoka's army. Thousands of men and women were deported.