History of the Thai armed forces before 1852

The Royal Siamese Armed Forces (Thai: กองทัพหลวง; RTGS: Kong Thap Luang) were the armed forces of the Thai monarchy from the 12th to 19th centuries. The term refers to the military forces of the Sukhothai Kingdom, the Ayutthaya Kingdom, the Thonburi Kingdom and the Early Rattanakosin Kingdom in chronological order.