Bangladesh Armed Forces Land Arbitration Of Bangladesh Armed Forces It is the largest branch of Bangladesh Armed Forces. The primary responsibility of the army is to provide the necessary power and manpower with all types of security and defense, including the integrity of Bangladesh's territorial integrity. All types of activities of the army are regulated by the Armed Forces Division. In addition to the primary responsibility, the Bangladesh Army is constitutionally committed to help the civil administration in any emergency. The primary responsibility of the army is to provide the necessary power and manpower with all types of security and defense, including the integrity of Bangladesh's territorial integrity.