After the end of the war in December 1971, the Bangladesh government awarded Safiullah the
Bir Uttam the second-highest military award in the country. Forthwith, he was appointed the first
Brigade Commander of the newly established
46th Independent Infantry Brigade. On 5 April 1972, General Osmani resigned from his post, and Safiullah was appointed the
Chief of Army Staff of
Bangladesh Army on 6 April 1972 by the
Awami League government under
Sheikh Mujibur Rahman and was promoted to the rank of Colonel. He was then upgraded to rank of Brigadier within mid 1973 and as of 10 October 1973 his rank was ameliorated to Major General. Safiullah was the chief of staff of the Bangladesh Army during the
assassination of then president Sheikh Mujibur Rahman. During the assassination, he was kept in the dark about the plot, intelligence failed and he could not save the President. Dismissed from the position on 25 August 1975 by the following Mushtaq government, he retired from the army. He was succeeded by
Ziaur Rahman as army Chief. Suspecting his intentions based on his loyalty towards Bangabandhu Sheikh Mujibur Rahman, General Safiullah was sent overseas with an ambassadorial post, along with fellow
Bangladesh Air Force Chief of Air Staff Air Vice Marshal A. K. Khandker. He was elected as an Awami League member of parliament in 1996. ==After retirement from army and into diplomatic circles==