Complex sentence: The Maratha's attacked and stormed Delhi, however, the Marathas were eventually driven off by the Mughal Army under the regional command of Amir Khan Bahadur and Vizier Qamaruddin Khan.
Split into simpler sentences: The Maratha's attacked Delhi, however they were eventually driven off by the forces of Amir Khan Bahadur. The Marathas were eventually driven off by the Mughal Army under the regional command of Amir Khan Bahadur and Vizier Qamaruddin Khan.