Le capitaine Borbal-Combret (au centre), des officiers de la 2e compagnie du 3e régiment de tirailleurs tonkinois et des soldats tonkinois à Lang-Nac près de Bac-Ninh. Décembre 1885. Source : ECPAD – collection colonel Laroche
Relations between France and the region known as Indochina began in the 17th century, when Jesuit missionaries arrived in the Far East and attracted an important following when the Jesuits, led by Pigeau de Béhaine, lent support to Emperor Annam Gia Long's attempts at unification. The Emperor, helped by French military advisors, was the first to unify Vietnam, in the late 17th century, where his dynasty ruled until 1955.