 Raoul de Clermont was one of the most important generals of King Louis IX of France.He participated in most campaigns of the King, including the Eighth Crusade against Tunis.appointed Constable of France in 1285 (probably), he fought in the Aragonese Crusade and in the Franco-Flemish War (1297–1305) against the County of Flanders, with Count Guy of Dampierre, his in-law.