The Corps of Army Air Defence (abbreviated as AAD), is an active corps of the Indian Army and a major combative formation tasked with air defences of the country from foreign threats. The AAD Corps is responsible for the protection of Indian air space from enemy aircraft and missiles, especially below 5,000 feet. The corps enjoyed autonomous status from 1994, after the bifurcation of the Corps of Air Defence Artillery from the Army's artillery regiment. A separate training school, the Army Air Defence College (AADC), was established to train its personnel.