Hyder Ali, "Haidarālī" (c. 1720 – 7 December 1782) was the Sultan and "de facto" ruler of the Kingdom of Mysore in southern India. Born as Hyder Ali Khan, he distinguished himself militarily, eventually drawing the attention of Mysore's rulers. Rising to the post of Dalavayi (commander-in-chief) to Krishnaraja Wodeyar II, he came to dominate the titular monarch and the Mysore government. He became the de facto ruler of Mysore as Sarvadhikari (Chief Minister) by 1761. During intermittent conflicts against the East India Company during the First and Second Anglo–Mysore Wars, Hyder Ali distinguished himself in military tactics, being the innovator of military use of the iron-cased Mysorean rockets. He also significantly developed the Mysorean economy.