Rajadhiraja I was a Chola emperor, the most skilled military commander among the Chola rulers and the successor of his father, Rajendra I. He was the only Chola emperor who was killed while leading his army in war, and although he had a short reign, he helped his father conquer several territories as well as to maintain the Chola authority over most of Sri Lanka, Eastern Chalukya and Kalinga, among others. Wikipedia