Prior to his appointment as commander in chief of navy, his command responsibilities included as his role as Commander Pakistan Fleet (COMPAK) and Commander Logistics (COMLOG) commands headquartered in Karachi, Sindh with being promoted to the two-star rank of Rear-Admiral.[1] After promoting as Vice-Admiral, he oversaw the induction of submarines in the navy in 1960s; for this, he is viewed as the "father of submarines force" of Pakistan Navy.[9][10]
He earned public notability when he acted as a leader during the war with India in 1965 despite having prior no knowledge on covert operation in Indian Kashmir.:24[11] He oversaw the planning of and execution of the naval operation to attack the Indian Navy which earned him the prestige in the country.:25[11] After the war, he was publicly honored and was decorated with Hilal-i-Jurat by President Ayub Khan.[1][12] He is noted for his multiple extensions in the navy that made him noted as the longest serving chief of staff of navy.[1]
He was known to be closer to President Ayub Khan who appointed him as the Defence and Interior Minister in 1966 while serving as an active-duty admiral.:104[8] About the uprising and riots in East-Pakistan in 1969, Vice-Admiral Rahman told the journalists that the "country was under the Mob rule and that Police were not strong enough to tackle the situation.":130[13] He served in ministerial post until 1969 when President Ayub Khan resigned and handed over the presidency to his Army Commander-in-Chief General Yahya Khan who suspended the Constitution.[1] In protest to the martial law, Vice-Admiral A.R. Khan resigned from his portfolio on 25 March 1969.[1][14] Khan resigned from the ministries as a protest when General Yahya Khan, instituted another martial law on 25 March 1969.[15]
After his resignation, Khan retired from national politics and moved to Islamabad in 1969 where he lived a very quiet and private life.[1] He did not comment on war with India in 1971 as he had diminished his role from the politics in 1970s.[1] In 1987, the Pakistan Navy honored him after establishing a naval base under his name.[16] The PNS Akram now serves as a forward operating base for the Navy and acts as a depot for all naval personnel stationed west of Ormara.[16]
He avoided the media and lived on a military pension; he died in Islamabad in 1983.[1] His death went unnoticed in the media and he was quietly buried in Islamabad with close family members attending his funeral.[citation needed]
12Army staff college. "Gallery Alumni". armystaffcollege.gov.pk. Command and Staff College. Archived from the original on 15 August 2016. Retrieved 1 November 2016.
12Virtuti Militari. "The First Destroyer". pakdef.org. «PakDef Military Consortium. Archived from the original on 4 March 2016. Retrieved 1 November 2016.