The club is one of the most successful in the history of Belgian football, but currently plays in the second division. The club won eleven Belgian championships between 1904 and 1935, making it the most successful Belgian club before World War II. The team colours are blue and yellow and its matricule is the n°10.
The club was founded in 1897 and obtained its first of eleven titles as Champion of Belgium in 1904. From 1933 to 1935 the team played 60 consecutive matches undefeated, setting a still unbeaten record in Belgium. In the early 1900s the club also had a dominant spell in some of the very first "European" Cup competitions that took place, prior to officially sanctioned UEFA competitions.
Between 1958 and 1965 the club had a brief spell of European success, playing the Inter-Cities Fairs Cup, and reaching the semi-finals in the 1958–60 edition after a two legged victory against A.S. Roma. In 1963, however, the club was relegated to the second division, and in 1980 even fell as low as the Belgian Promotion division.