The Battle of Boyra, on 22 November 1971, was a Ground and aerial battle that was fought between the India and Pakistan The Pakistani Army was engaged in combat against the Mukti Bahini (Bengali Guerrilla fighters) and a Division size detachment of the Indian Army in the Battle of Garibpur as part of the Bangladesh Liberation War. Pakistani ground forces requested air cover and close air support from the Pakistan Air Force (PAF). The PAF aircraft, while providing support to the Pakistani ground units. A detachment of four Folland Gnats was moved to Dum Dum (Kolkata Airport) from its parent base at Kalaikunda, near Kharagpur, over 100 km to the Southwest, to intercept the Pakistan Air Force aircraft. The Detachment was commanded by Flt Lt Roy Andrew Massey.