Operation Brasstacks was a codename of a major military exercise of the Indian Army in Rajasthan state of India, that took place in 1986 until its execution in 1987.As part of a series of exercises to simulate the operational capabilities of the Indian armed forces, it was the major and largest troop mobilizations of Indian forces in the Indian subcontinent. Operation Brasstacks was tasked with two objectives: the initial goal was the deployment of ground troops.