Eighteen Days
The Kurukshetra War is a mythological war described in the Indian Indian epic Mahabharata as a conflict that arose from a dynastic succession struggle between two groups of cousins of an Indo-Aryan kingdom called Kuru, the Kauravas and Pandavas, for the throne of Hastinapura. The war lasted only eighteen days, during which vast armies from all over the Indian Subcontinent fought alongside the two rivals. In which Pandavas got victory and Kauravas lost the empire.