Kalinga War
Although he won the war, Ashoka realized the futility of war. He saw the bloodshed and suffering of the soldiers' families and vowed never to fight again. He converted to Buddhism and he dedicated his later life to help his subjects. He stopped conquering after he won a war. He wrote inscriptions for wanting that his son and grandson also never to think about war. He decided to observe Dhamma, a common code of conduct and was also inspired by the teachings of Buddha. He sent many Buddhist scholars to distant lands to propagate Dharma. It is said that one lakh people died in this war. Many pillar and rock edicts were written on the guilt that he felt after seeing the bloodshed.