261 BC
The Kalinga War
The setting
Kalinga, on the east coast of India, in modern Odisha
Coastal plain and river deltas between the Mahanadi and Godavari, backed by forested hills.
Read the historical account
Mauryan conquest of Kalinga.
The military detail does not survive. What survives is the accounting, and it is the victor's.
What followed
The most extraordinary attestation in the atlas: a victorious king recorded the human cost of his own conquest, in his own inscriptions, in the first person, and said it caused him remorse. The Thirteenth Rock Edict is contemporary, official, and epigraphic - the opposite of the narrative-history genre most battles survive in. ⚠ It is still the victor's record. Kalinga's own account does not survive, and the edict's remorse served a purpose: it announces a new imperial policy.