The Indian Air Force is the air-arm of the Armed Forces of India and has the prime responsibility of conducting aerial warfare and securing the Indian airspace. It was established on October 8, 1932 as the Indian Air Force. It was granted the prefix "Royal" in 1945 in recognition of its services during the Second World War. The prefix Royal was dropped after India became a Republic in 1950. With its headquarters in New Delhi, the Indian Air Force has a strength of approximately 170,000 personnel and 1,350 combat aircraft (2006 figure) making it the fourth largest air force in the world.