NDA Coaching In Dehradun NDA Coaching In Dehradun is the most populous city in the state of Uttarakhand. The state of Uttarakhand has given highest number of soldiers to the Indian army in which we can assume that Dehradun has contributed the most. Some of the oldest regiments are situated in Uttarakhand. Lansdowne Cantonment is the command office of  Garhwal Rifles while cantonment at Ranikhet is home to Kumaon Regiment and Naga Regiment. Other cantonments in Uttarakhand are situated at Landour, Dehradun, Chakrata and Roorkee. Dehradun is a notable academic and research hub and is home to Indian Military Academy,