I think you are confusing Mujib Bahini with Mujib Battery.Mujib Battery was a legendary artillery force of the Muktibahini.Mujib Bahini was formed towards the end of the war to take control from the ultra leftist freedom fighters.It did fight beside the Muktibahini and were somewhat better equiped.But nonetheless it was a political force and whose primary motivation was to retain control of the war and the soon to be liberated country.It was later transfored into the infamous Jatiyo Rakkhi Bahini which has been compared to the Gestapo and other Nazi forces.Mujib's birth story seemed pretty unlikely but I don't think anyone cares who he was born to.He will be remebered for his actions and contributions.
Im not confusing here. Ive seen this forum more than you. You can google for any negative
things related to BD independence and you will find our fellow bds here cheering opposite
the main independence belief. You can see the thread where they tried to prove mujib bahini
or battery never fought the war and trained before 71 by india.