The Sikh Guru who fought in the Mughal ranks during the reign of Aurangzeb was

The period following the execution of Guru Tegh Bahadur – the father of Guru Gobind Singh, was a period where the Mughal Empire under Aurangzeb was an increasingly hostile enemy of the Sikh people. The Sikh resisted, led by Gobind Singh, and the Muslim-Sikh conflicts peaked during this period.