https://en.wikipedia.org/wiki/EsquireUsage in India
Before 1947, the term esquire was used by senior officers of the Indian Civil Service and other members of the government. In keeping with the criteria established centuries earlier, the title was mostly used by government officials who studied or trained in England, especially in the universities of Oxford, Cambridge, or London or other professional organisations managed by the government. Barristers were especially included in the order of the esquires. Members of the armed forces as well as those who were inducted in to it from other services, temporarily or permanently, were also called esquires.[6]