[2] While the first stand was built in 1947 and lighting was installed the following year, and the infrastructure thus improved, the club could not avoid relegation to the Regional Division II.

[2] Under the leadership of player-coach Roger Burgers, Eupen won the first title in its history, which was then repeated the following year, enabling the club to reach national divisions for the first time in 1951.

The title-winning team featured some of the most iconic players of the club's history, including Werner Pirard and Karl Franssen, the emblematic captain Günter Brüll, as well as goalkeeper Elmar Keutgen, future mayor of the City of Eupen and member of the Parliament of the German-speaking Community.

[2] Eupen lost their first home match against FC Malinois but won the next against Jean Nicolay's Daring Club Bruxelles, earning their first win in the second tier.

[2] After surviving their first season in the second tier, the club recorded another big signing during the off-season as Philippe Garot arrived at the Kehrweg.

[2] At the end of the season and after six years at the club, Hubert Van Dormael was replaced by Gerhard Prokop, who took over the reins as player-coach.

[2] But, lacking the funds, the club was forced to part with some key players at the end of the season, including Philippe Garot.

[2] Paul Brossel once again chose to recruit players in Germany in the off-season, with Rot-Weiß Oberhausen top goalscorer Ulrich Kallius arriving in Eupen at the start of the 1972–73 season.

[4] The 1973–74 season also marked the return of Hubert Van Dormael, as coach, with Prokop regaining his status as a player.

[2] The Pandas then turned to the play-offs for a chance to win a historic promotion, but morale was gone and the team recorded six defeats in as many games.

[2] To the sporting disappointment were added new financial problems which forced the club to once again sell its best players: Gebauer left for Charleroi, Taeter signed with Winterslag and Prokop with Aachen.

[2] The club, however, continued developing its infrastructure, creating its first board of directors and installing new lighting at the home ground.

In 1993, an agreement was struck between the club and the city for the construction of a brand new all-seater stand, including among others a cafeteria and a business section.

[2] Back in the third division, the club celebrated its fiftieth anniversary on this occasion, obtaining the "Royal" prefix on 28 September 1995.

[7] During this period, primarily young players from the region represent the first team, including Marc Chauveheid, son of the coach and scorer of 90 goals during his career at Eupen.

Surprisingly, the club pushed on for promotion to the First Division, which they were close to reaching in the 2002–03 season, before eventually losing in the play-offs.

[1] After this run, Eupen's results worsened, and after the departure of Claudy Chauveheid,[9] the club fell to the bottom of the second division in the winter of 2008.

[1] Although not deemed favourites before the play-offs, Eupen managed a historic promotion after a 2–1 victory over Mons to win in the final round.

Until the winter break, AS Eupen never got past third from last place and were bottom of the table from matchday 14 to 23 before they defeated the runners-up, Charleroi, 1–0 at home.

In the meantime, head coach Jordi Condom was dismissed on 7 November 2017, and replaced by the former French international Claude Makélélé.

Despite his statement that he will be available to the club as an ambassador for various projects, he resigned after a month and moved to Chelsea as a mentor for youth players.