Complex sentence: He united the rival groups within the military with the help of Fazlul Bari, while Brig A T M Amin played a major role in arresting and removing people from the government.
Split into simpler sentences: He united the rival groups within the military with the help of Fazlul Bari. Brigadier General A T M Amin was said to play a major role in arresting and removing people from the government.