sentences:  "Wallonie libre" originated as a political association of Walloon migrants in Brussels before World War II which was known as the Walloon Guard ("Garde wallonne").It was heavily influenced by the radical Walloon Movement which supported the secession of Wallonia and its merger into France.The group was re-formed in the aftermath of the Battle of Belgium (10–28 May 1940) to provide aid to the French which were still fighting Nazi Germany.