There was a time, of course, when this was not really a rivalry at all. For most of the last century Hertha Berlin and Union Berlin existed in separate worlds: divided by geography and history, by the 23 kilometres from the Olympiastadion in Charlottenburg to the Alte Försterei in Köpenick, by several league divisions and – famously – a large wall. To this day there are Union fans who say their biggest adversaries are not Hertha but their east Berlin neighbours Dynamo, and heartily continue to sing anti-Dynamo songs on their way to games.
Indeed, during the cold war a curious solidarity existed between the two clubs. Hertha fans from the west would cross into east Berlin to watch Union games. Union fans would make trips to Prague and Plovdiv to watch Hertha in European competition. In January 1990, a couple of months after the fall of the Wall, the clubs played an emotional friendly in front of 50,000 fans at the Olympiastadion. There were tears in the stands and embraces on the pitch. Briefly, Hertha and Union seemed to capture the indomitable spirit of the reunified city.
