Soon King Bodawpaya of Burma started to pursue his ambitious campaigns to expand his dominions over Siam. The Burmese-Siamese War (1785–1786), also known in Siam as the "Nine Armies War" because the Burmese came in nine armies, thus broke out. The Burmese soldiers poured into Lanna and Northern Siam. Siamese forces, commanded by Kawila, Prince of Lampang, put up a brave fight and delayed the Burmese advance, all the while waiting for reinforcements from Bangkok. When Phitsanulok was captured, Anurak Devesh the "Rear Palace", and Rama I himself led Siamese forces to the north. The Siamese relieved Lampang from the Burmese siege.