Dewathang is the site where Jigme Namgyal, the father of Gongsar Ugyen Wangchuck led the Bhutanese troops in a final battle against the British in 1884.
Though the Bhutanese put up a strong resistance against the British, Jigme Namgyal ultimately signed the treaty of Sinchula with the British in 1865. The office of the Gyadrung, the district administrator was once located in this small town situated 18 km from Samdrup Jongkhar.