The BSF's capabilities were used in the Indo-Pakistani War of 1971 against Pakistani forces in areas where the Regular Forces were thinly spread; BSF troops took part in several operations including the famous Battle of Longewala. In fact, for BSF the war on eastern front had started well before the war actually broke out in December 1971. BSF had trained, supported and formed part of Mukti Bahini and had entered erstwhile East Pakistan before the actual hostilities broke out. BSF had played a very important role in Liberation of Bangladesh which Indira Gandhi and Sheikh Mujibur Rehman had also acknowledged.