
The Courcelles massacre, sometimes known as the Rognac massacre, was a massacre of 19 civilians perpetrated by a collaborationist militia associated with the Rexist Party in German-occupied Belgium during World War II. It occurred on 17–18 August 1944 near Courcelles, a suburb of the industrial city of Charleroi in Hainaut Province, shortly before the Liberation of Belgium in revenge for the killing of a Rexist official by the Belgian Resistance.

The Duitsch-Vlaamsche Arbeidsgemeenschap, better known as DeVlag, was a small radical pro-Nazi organization active in Flanders during the German occupation of Belgium. It was founded in 1936 by academics Jef Van de Wiele and Rolf Wilkening as a cultural association, with the purpose of strengthening the exchange of students and professors between the universities of Leuven and Cologne.

The Rexist Party, or simply Rex, was a far-right Catholic, nationalist, authoritarian and corporatist political party active in Belgium from 1935 until 1945. The party was founded by a journalist, Léon Degrelle, and, unlike other fascist parties in the Belgium of the time, advocated Belgian unitarism and royalism. Initially the party ran in both Flanders and Wallonia, but it never achieved much success outside Wallonia and Brussels. Its name was derived from the Roman Catholic journal and publishing company Christus Rex.

The Verdinaso, sometimes seen as Dinaso, was an authoritarian and fascist-inspired political party in Belgium and the Netherlands during the 1930s. It was founded by Joris Van Severen, Jef François, Wies Moens, and Emiel Thiers on October 6, 1931, and, in 1937, developed a paramilitary wing that wore green shirts.

The Vlaams Nationaal Verbond, widely known by its acronym VNV, was a Flemish nationalist political party active in Belgium between 1933 and 1945. It became the leading force of political collaboration in Flanders during the German occupation of Belgium in World War II. Authoritarian by inclination, the party advocated the creation of a "Greater Netherlands" (Dietsland) combining Flanders and the Netherlands.

Volk en Staat was a Flemish daily newspaper between 1936 and 1944, linked to the Fascist Vlaams Nationaal Verbond (VNV) party. It was founded on 15 November 1936 and banned shortly after the liberation of Belgium from German control in 1944.

The Walloon Legion was a collaborationist military formation recruited among French-speaking volunteers from German-occupied Belgium, notably from Brussels and Wallonia, during World War II. It was formed in the aftermath of the German invasion of the Soviet Union and fought on the Eastern Front as part of the German Army (Wehrmacht) and later the Waffen SS alongside similar formations from other parts of German-occupied Europe.