In the 1934-1935 season, Royale Union Saint-Gilloise made history by reaching the Belgian Cup final, held on May 26, 1935, at the Royal Stadium in Brussels. The opponent was the formidable RSC Anderlecht, considered one of the top teams in Belgium at the time. The tension was palpable, as it was not just a match for the Cup, but also a showdown between the two largest clubs in the capital.

The match was a true spectacle, drawing thousands of supporters to the stadium, highlighting the fierce rivalry between the two clubs. Union, under the legendary coach Louis Baert, came out strong and immediately showcased their attacking prowess. The team was famous for its fast and technical style of play, giving them an edge in the competition.

In an unforgettable first half, Union managed to score two goals, sending their supporters into ecstasy. The atmosphere was electric, and Union fans sang loudly to encourage their players. However, RSC Anderlecht was not about to give up easily and made a strong comeback in the second half. They managed to score one goal, intensifying the tension.

Nonetheless, Union held firm, and the defense, led by the resolute goalkeeper, did everything to maintain the lead. It was a true test of character and determination. Eventually, the final whistle blew, and Royale Union Saint-Gilloise's triumph was a fact. The victory was celebrated as a win for the entire city of Brussels, with fans making the day unforgettable.

That Belgian Cup victory in 1935 remains an important chapter in the history of Royale Union Saint-Gilloise. It symbolized not only the strength and determination of the club but also the pride of the supporters who have always stood behind their team. The win ensured that Union could cement its place in Belgian football history, and it continues to be a source of inspiration for the current generation of players and fans. This historic victory is still remembered as one of the highlights in the rich history of Les Unionistes.