Complex sentence: Najib-ud-daula, also known as Najib Khan, was a noted Rohilla Afghan Mughal serviceman, he later deserted the cause of the Mughals and joined Ahmed Shah Abdali in 1757 in his attack on Delhi.
Split into simpler sentences: Najib-ud-daula, also known as Najib Khan, was a noted Rohilla Afghan. He deserted the cause of the Mughals and joined Ahmed Shah Abdali in 1757 in his attack on Delhi.