The Siege of Tuyen Quang was an important confrontation between the French and the Chinese armies in Tonkin (northern Vietnam) during the Sino-French War (August 1884 – April 1885). A French garrison of 630 men, including two companies of the French Foreign Legion, successfully defended the French post of Tuyen Quang against vastly superior Chinese forces in a four-month siege from 24 November 1884 to 3 March 1885. 'Tuyen Quang 1885' remains one of the Legion's proudest battle honours.