The Indian Forest Service (IFS) is one of the three All India Services of the Government of India. The other two All India Services being the Indian Administrative Service and the Indian Police Service. It was constituted in the year 1966 under the All India Services Act, 1951, by the Government of India. Earlier, the British Government in India had constituted the Imperial Forest Service in 1867 which functioned under the Federal Government until the Government of India Act 1935 was passed and responsibility was transferred to the provinces.