New Delhi, Oct. 1 -- Defence minister Rajnath Singh on Tuesday said jointness in the military --- a prerequisite to the creation of theatre commands --- cannot be achieved through structural reforms alone but will also require a change in mindset and the challenges involved will have to be tackled through dialogue and understanding, stressing that tri-service integration is a must for survival in a fast-changing security environment.

Such a change, he said, will not be easy as it will require "overcoming legacy habits and institutional silos," adding that the integration drive must respect the uniqueness of each service and "uniformity cannot be imposed where it does not fit."

"We will face challenges as we move towards jointness. But t...