Lachit Borphukan was a commander and Borphukan in the Ahom kingdom known for his leadership in the 1671 Battle of Saraighat that thwarted a drawn out attempt by Mughal forces under the command of Ramsingh I to take back Kamrup. He died about a year later due to illness.Lachit Borphukan, was the son of Momai Tamuli Borbarua,the first Borbarua (Governor of upper Assam and Commander-in-Chief of the Ahom army) under Prataap Singha. Lachit Borphukan was educated in humanities, scriptures and military skills. He was given positions of responsibility of the scarf-bearer (Soladhara Barua) of the Ahom Swargadeo, a position equivalent to a Private Secretaryship, which was regarded as the first step in career of an ambitious diplomat and politician. Other offices held by Lachit before his appointment as Borphukan included Superintendent of the Stable of Royal Horses (Ghora Barua), Commander of the strategic Simulgarh Fort and Superintendent of the Royal Household Guards or (Dolakaxaria Barua) to the Ahom king Chakradhwaj Singha. King Chakradhwaj Singha selected Lachit Borphukan lead the army in the campaign against the Mughals who held Guwahati. The King presented Lachit with a gold-hafted sword (Hengdang) and the customary paraphernalia of distinction. Lachit raised the army and preparations were completed by summer of 1667. Lachit recovered Guwahati from the Mughals and successfully defended it against the Mughal forces during the Battle of Saraighat.
Lachit Borphukan died about a year after the victory at Saraighat due to natural causes. His remains lies in rest at the Lachit Maidam built in 1672 by Swargadeo Udayaditya Singha at Hoolungapara 16 km from Jorhat. There is no portrait of Lachit Barphukan, but an old chronicle describes him, saying "His face is broad, and resembles the moon in its full phase. No one is capable of staring at his face."