The Ministry of Personnel, Public Grievances and Pensions is the cadre controlling authority for the Administrative Service, the Ministry of Environment, Forest and Climate Change for the Forest Service and The Ministry of Home Affairs for the Police Service, while examination for recruitment of IAS and IPS is conducted by the Union Public Service Commission (UPSC) on the basis of the annual Civil Services Examination, a common civil service examination, and for the Indian Forest Service on the basis of the Forest Service Examination. Since 2012 onwards, the preliminary (first test) of the two examinations are combined. These officers are recruited and trained by the Central Government, and then allotted to different State cadres.