Complex sentence: In response, Guru Tegh Bahadur's son and successor, Guru Gobind Singh, further militarized his followers, starting with the establishment of Khalsa in 1699, eight years before Aurangzeb's death.
Split into simpler sentences: In response, Guru Tegh Bahadur's son and successor, Guru Gobind Singh, formed Khalsa. Starting with the establishment of Khalsa in 1699, eight years before Aurangzeb's death.