The XVII Corps is a specialized military formation of the Indian Army, officially designated as the 17 Mountain Strike Corps or the Brahmastra Corps. It is India's first and premier mountain strike corps, headquartered at Panagarh in West Bengal under the Eastern Command.
The Corps was raised in 2014, with its raising day commemorated on January 1, to address a critical gap in India's rapid offensive capabilities along the northern borders. Its creation was a direct response to escalating Chinese military infrastructure development and the need for a counter-offensive force following the 1962 war. The initial raising took place in Ranchi, and the Corps attained full operational capability by September 2021.
The primary mechanism of the XVII Corps is to deliver rapid counter-offensive capabilities against potential Chinese aggression along the Line of Actual Control (LAC), specifically in the eastern sector from Sikkim through Arunachal Pradesh. It is designed to function as a quick reaction force, emphasizing offensive maneuvers in high-altitude terrain. Its core combat formation includes the 59th Mountain Division.
The Corps is currently connected to a major transformation in the Indian Army through the concept of Integrated Battle Groups (IBGs). The XVII Corps is being used as a testbed for the phased rollout of these IBGs, which are brigade-sized, self-sufficient combined arms units of over 5,000 troops. The IBG concept, first proposed by former Army Chief General Bipin Rawat, is intended to replace traditional structures for greater agility and a planned response time of within 48 hours. The "IBGisation" of the 17 Mountain Strike Corps is expected to be completed by mid-2027.