The Burmese–Siamese War (1809–1812) or the Burmese Invasion of Thalang was an armed conflict fought between Burma under Konbaung dynasty and Siam under the Chakri dynasty, during the period of June 1809 and January 1812. The war centered on the control of the Phuket Island, also known as Thalang or Junk Ceylon, and the tin rich Andaman Coast. The war also involved the Kedah Sultanate. This occasion was the last Burmese offensive expedition into Siamese territories in Thai history, with British acquisition of the Tenasserim Coast in 1826, following the First Anglo-Burmese War, removing several hundred miles of the existing land border between Siam and Burma. The war also left Phuket devastated and depopulated for many decades until its reemergence as a Tin mining center in the late 19th century.