Union Saint-Gilloise, often simply called Union SG, is a historic Belgian football club based in Brussels, currently competing in the Belgian Pro League. They play their home matches at the iconic Stade Joseph Marien. Founded in 1897, the club wears the distinctive colors of yellow and blue. Union boasts an illustrious early history, dominating Belgian football in the early 1900s with 11 league titles before 1935. After decades in the lower leagues, the club is currently experiencing a spectacular modern renaissance. Promoted to the top flight in 2021, they immediately challenged for the title, finishing as runners-up in their first season back. This current era, led by a shrewd management and a cohesive team, represents their peak in nearly a century. The modern Union is known for its intense pressing, tactical intelligence, and incredible team spirit. Their passionate and growing fan base, known for creating a vibrant atmosphere, has rediscovered its historic club. Union Saint-Gilloise's story is one of the most remarkable revivals in European football.