The Battle of Gurusar was the third battle fought by Sri Guru Hargobind Sahib Ji near Mehraj with Lala Beg and Qamar Beg in 1631.

Despite overwhelming odds, the mughals were completely crushed in this battle. The mughals had a 35,000 strong army while Guru Hargobind's side only numbered 4,000. The battle was fought during winter season and Guru Ji had pre-planned everything.

Guru Hargobind's horses were snatched by Mughals and recovered by Gursikh, Bhai Bidhi Chand.

Sri Guru Hargobind Sahib Ji visited Nathana before (and after) the 1631 Battle of Gurusar took place.

Bhai Kalu Nath was a Sikh of Guru Hargobind and lived in Nathana. Bhai Kalu served the Sikh army with food and milk during the battle. The Sikh weapons were stored here.