who determines rules of recruitment to all india services
All India Services The Ministry of Personnel, Public Grievances and Pensions is the cadre controlling authority for the IAS, The Ministry of Environment, Forests and Climate Change for the IFS and The Ministry of Home Affairs for the IPS 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 IFS on the basis of the IFS 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.