General M.A.G. Osmani — widely revered as "Bangabir" (Hero of Bengal)— was the Commander-in-Chief of the Mukti Bahini (Liberation Forces) during the 1971 Bangladesh Liberation War and is honoured as the founding father of Bangladesh’s Armed Forces.

Born on 1 September 1918 in Sunamganj, Sylhet, Osmani was commissioned into the British Indian Army in 1939 and served with distinction in the Burma Campaign during World War II, rising to the rank of Major. Following the partition of Subcontinent in 1947, he joined the Pakistan Army, eventually attaining the rank of Lieutenant Colonel before retiring in February 1967.

With the outbreak of war in 1971, the Provisional Government of Bangladesh appointed him as Commander-in-Chief of the Mukti Bahini and Bangladesh Forces in April 1971. Under his leadership, Bangladesh's armed resistance was organized and immensely contributed to ultimate victory. On 7 April 1972, he was promoted to Bangladesh’s first four-star General, overseeing the formal establishment of the Bangladesh Army, Navy, and Air Force.

General Osmani passed away on 16 February 1984. His legacy endures through institutions bearing his name, including the Sylhet Osmani International Airport, Osmani Medical College, the Osmani Museum, and the Osmani Centre for Peace and Security Studies.