Borussia Mönchengladbach currently has around 1,100 official fan clubs with nearly 34,000 members. In addition, there are numerous self-organized fans who do not register with the club. The over 1,000 fan clubs are spread across the globe - from A for Algeria to Z for Cyprus. The fans of the Foals form their own universe: they cannot be controlled and yet would literally give their last shirt for the Borussia team. They support their team at every game and accompany them to training camps. Despite their shared fandom, they do not form a homogeneous mass but instead value their uniqueness. So what fan groups exist and how do the fans of the Foals think? This book serves as a lexicon, reference work, and narrative collection all in one - always with the diamond in their hearts!.