 Two separate units of the Waffen @-@ SS , the Flemish Legion and the Walloon Legion , were recruited from Belgium during the occupation . Léon Degrelle , founder of the Rexist Party , served as commander of the Walloon Legion , which fought against the Soviet Union in Eastern Europe . A total of 15 @,@ 000 Belgians in the " divisions " ( neither ever greater than brigade strength ) fought on the Eastern Front where the Walloon Legion was nearly annihilated in the Korsun – Cherkassy Pocket in 1944 . 
