Question: After independence, who was the first commander in chief of the military branch T. B. Henderson Brooks was part of?

full_context: Document 1: Brodie Haig: General Sir Arthur Brodie Haig, KCB, MC and bar (31 January 1886 – 9 February 1957) was a British officer in the Indian Army. A pre-war regular officer he served in India prior to the outbreak of the First World War when he was posted to the Middle East. He was wounded at the Battle of Shaiba, twice mentioned in dispatches and awarded the Military Cross (MC) before he was taken prisoner by the Ottoman Empire at the Siege of Kut. Escaping captivity in August 1918 he received a bar to his MC.
Document 2: Chief of Army Staff (Pakistan): In 1969, the title of the army command was changed from ``Commander - in - Chief ''to`` Chief of Staff'' with President Yahya Khan acting as Commander - in - Chief and General A.H. Khan as Chief of Staff. On 20 March 1972, the post was renamed as ``Chief of Army Staff ''(COAS) with Lieutenant - General Tikka Khan elevated to four star rank to be appointed as army's first chief of army staff.
Document 3: Indo-Pakistani War of 1971: By the end of April 1971, Prime Minister Indira Gandhi had asked the Indian army chief General Sam Manekshaw if he was ready to go to war with Pakistan. According to Manekshaw's own personal account, he refused, citing the onset of monsoon season in East Pakistan and also the fact that the army tanks were in the process of being refitted. He claimed that he offered to resign, which Indira Gandhi declined. He then said he could guarantee victory if she would allow him to prepare for the conflict on his terms, and set a date for it and Prime Minister Indira Gandhi accepted his conditions. In reality, Indira Gandhi was well aware of the difficulties of a hasty military action but she needed to get the military's views to satisfy her hawkish colleagues and the public opinion, which were critical of India's restraint.
Document 4: Arthur Henderson (VC): He was 23 years old, and an Acting Captain in the 4th Battalion, The Argyll and Sutherland Highlanders (Princess Louise's), British Army, attached to 2nd Battalion during the First World War. On 23 April 1917 near Fontaine-les-Croisilles, France, he performed the deed for which he was awarded the Victoria Cross. He died the following day.
Document 5: Governor-General of India: Governor - General of India Standard of the Governor - General Louis Mountbatten, the last Viceroy of India & the first governor - general during the dominion period Style His Excellency Residence Viceroy's House Appointer East India Company (to 1858) Monarch of India (from 1858) Formation 20 October 1774 First holder Warren Hastings Final holder Chakravarthi Rajagopalachari Abolished 26 January 1950
Document 6: Governor-General of India: Viceroy and Governor - General of India Standard of the Governor - General Louis Mountbatten, the last Viceroy of India & the first Governor - General during the dominion period Style His Excellency Residence Viceroy's House Appointer East India Company (to 1858) Monarch of India (from 1858) Formation 20 October 1774 First holder Warren Hastings Final holder Chakravarthi Rajagopalachari Abolished 26 January 1950
Document 7: Indo-Pakistani War of 1971: The Indian Army Chief in 1971 Field Marshal Sam Manekshaw had the highest respect for the fighting capability of the Pakistan Army but he did not accept the theory that they did not fight the Bangladesh war with enough vigor and zeal. In a BBC interview, he said:
Document 8: Frank Blaker: Born in Kasauli, Punjab, India, Frank Blaker was 24 years old, and a Temporary Major in the Highland Light Infantry, British Army, attached to 3rd Battalion, 9th Gurkha Rifles, in the Indian Army during World War II when the following deed took place for which he was awarded the VC.
Document 9: Chief of Army Staff (Pakistan): The Chief of Army Staff (Urdu: سربراہ پاک فوج ‎ ‎) (reporting name: COAS), is a military appointment and statutory office held by the four - star rank army general in the Pakistan Army, who is appointed by the Prime Minister of Pakistan and final confirmation by the President of Pakistan.
Document 10: Chief of the Air Staff (India): Chief of the Air Staff is the professional head and the commander of the Indian Air Force. The position is abbreviated as CAS in the Indian Air Force cables and communication, and is usually held by a four - star air officer of the rank Air Chief Marshal. The current CAS is Air Chief Marshal Birender Singh Dhanoa who took office on 31 December 2016, following the retirement of Air Chief Marshal Arup Raha.
Document 11: David Tennant Cowan: Major General David Tennant Cowan CB, CBE, DSO & Bar, MC (9 October 1896 – 1983), also known as "Punch" Cowan, was an officer in the British Army and British Indian Army in World War I and World War II. He was distinguished for leading the Indian 17th Infantry Division during almost the entire Burma Campaign.
Document 12: Rudolph Trower Hogg: Born on 19 January 1877, Rudolph Trower Hogg was educated at Bedford School and at the Royal Military Academy, Woolwich. He received his first commission as a Second Lieutenant in the Royal Artillery in 1896. He transferred to the Central India Horse in 1901 and was promoted to the rank of Captain in 1905. He was appointed Assistant Military Secretary to King George V in 1911 and served during the Delhi Durbar between 1911 and 1912. He served during the First World War, during the Gallipoli Campaign and in France, and was appointed Brigade Commander of the newly-formed Royal Air Force in 1918.
Document 13: Chief of the Army Staff (India): No. Name Rank Photo Appointment Date Left Office Unit of Commission Decorations Rob Lockhart General 15 August 1947 31 December 1947 51st Sikhs KCB, CIE, MC Roy Bucher General 1 January 1948 15 January 1949 Cameronians (Scottish Rifles) KBE, CB, MC Kodandera M. Cariappa General 16 January 1949 14 January 1953 Rajput Regiment OBE Rajendrasinhji Jadeja General 14 January 1953 1 April 1955 2nd Lancers (Gardner's Horse) DSO
Document 14: T. B. Henderson Brooks: Lieutenant General Thomas Bryan ("T.B.") Henderson Brooks (11 January 1909 - 5 January 1997) was a senior officer of the Indian Army who is best known for authoring the as yet classified Henderson Brooks-Bhagat Report along with Brigadier Premindra Singh Bhagat (later Lieutenant General). At the time, Henderson Brooks was the commander of XI Corps, based in Jalandhar. The report is an internal operational analysis of the Indian Army following the Indian defeat in the Sino-Indian War of 1962. He was an Anglo-Indian, and a second-generation Indian Army officer.
Document 15: Robert Johnson Henderson: Robert Johnson Henderson (November 12, 1822 – February 3, 1891) was a Confederate States Army colonel during the American Civil War (Civil War). His obituary stated that he was made a brigadier general by General Joseph E. Johnston, after Johnston witnessed Henderson making a desperate charge at the Battle of Bentonville, North Carolina, on March 10, 1865. At the suggestion of his divisional commanders, Henderson signed his parole as a brigadier general. Later, Henderson stated in his pardon application that he had been recommended for promotion to brigadier general but had never received a commission. Henderson commanded a brigade for several weeks at the end of the war but never was officially appointed by Confederate President Jefferson Davis and confirmed by the Confederate States Senate to brigadier general rank.
ground_truth: Rob Lockhart
sub_queries: T. B. Henderson Brooks >> military branch Answer: Indian Army
first commander in chief of Indian Army after independence Answer: Rob Lockhart