Could you find the mistakes in this passage?
Bangladesh has achieved its final victory on 16 December in 1971 after nine-month liberation war. During the liberation war, Pakistani soldiers had committed vast atrocities including rape, murder, burning and destruction of numerous houses and properties. In that hellish and heinous barbarism, Al-Badar and Al-Shams were paramilitary ( Rajakar ) collaborated with the Pakistani brutal army. In that bloody dreadful war, 3 million people were murdered along with 4 lakh women were physically dishonored by those Pakistani and their collaborators. After the long cherished independence, Bangabandhu Sheikh Mujibur Rahman arrested about 40 thousand war criminals (Rajakars) for establishing justice on behalf of the fellow country men.