[1][2] The Supreme Commander's Headquarters was established with the support of the leadership of the Indian National Congress and the Muslim League and with the approval of the Viceroy and Governor-General of India, the Viscount Mountbatten.
It consisted of senior British officers and soldiers deputed to assist the Joint Defence Council.
Due to mutual disagreements between the Indian and Pakistani leaders over the continued necessity of a Joint Defence Council following independence and Partition in August 1947, the Supreme Commander India and Pakistan, Field Marshal Auchinleck, requested the British government to close the headquarters and withdraw all its personnel.
[1] The Supreme Commander's Headquarters was established by the Joint Defence Council with effect from 11 August 1947.
It was headed by Field Marshal Claude Auchinleck, the Supreme Commander India and Pakistan from that date until 30 November 1947.