IAS officer Kundan Kumar appointed private secretary to Defence Minister Rajnath Singh on Saturday, June 15, 2019 Get link Facebook X Pinterest Email Other Apps IAS officer Kundan Kumar was on Thursday appointed Private Secretary to Defence Minister Rajnath Singh, according to a Personnel Ministry order. Kumar, a 2004 batch IAS officer of Bihar cadre, will have a tenure up to Februray 3, 2020, it said.