1. FC Union Berlin, commonly known as Union Berlin, is a professional football club based in Berlin, Germany. The club was founded in 1966, but its roots trace back to earlier clubs established in the... early 20th century. Union Berlin has a passionate fanbase and a unique atmosphere. The club's primary colors are red and white. They are commonly known as "Die Eisernen," which translates to "The Iron Ones" in English, reflecting the resilience and determination associated with the team. Traditionally, Union Berlin's home kit is red with white accents, reflecting the club's primary colors. The away kits often offer variations in color and design, but they might include different shades of black, white, or other complementary colors. The club plays its home matches at the Stadion An der Alten Försterei, which is located in the Köpenick district of Berlin. The stadium is known for its passionate fanbase and its standing terraces, creating a unique and vibrant atmosphere. Union Berlin gained prominence by achieving promotion to the Bundesliga, Germany's top-tier football division, for the first time in the club's history for the 2019-2020 season. In the 2023-24 season, Union Berlin competed in the UEFA Champions League.