Patiala State was a Punjabi kingdom, and later, a princely state within the British Raj, and one of the Phulkian States, that acceded to the Union of India upon Indian independence and partition in 1947. The state was founded by Ala Singh in 1762. Patiala State was the largest and most important princely state in the Punjab Province. The state's ruler, the Maharaja of Patiala, was entitled to a 17-gun salute and held precedence over all other princes in the Punjab Province during the British Raj. The state was ruled by Jat Sikhs of the Sidhu clan.
The kingdom's imperial troops also fought in World War I and World War II on behalf of the British Indian Empire.