 The Nguyễn army at times also clashed with the Siamese army to establish influence over the former Khmer Empire.In 1771, the Tây Sơn revolution broke out in Quy Nhơn, which was under the control of the Nguyễn lord.The leaders of this revolution were three brothers named Nguyễn Nhạc, Nguyễn Lữ, and Nguyễn Huệ, not related to the Nguyễn lords.