Leagues were groups of Squat Strongholds which worked together for a common purpose- usually mutual defence- trade or dealings with the Imperium. Leagues varied greatly in size, the smallest consisting of four Strongholds and the largest consisting of over three thousand. The League of Thor was the most powerful and influential, including over 300 strongholds. The League of Norgyr was the league closest to Holy Terra.
A League usually encompassed the Strongholds on more than one planet. There were around 700 Leagues at the time of the Squat extinction.
Each League was led and dominated by a single Stronghold. As some Leagues were virtually nations with distinct cultures, Squats often identified themselves with the League their Stronghold belonged to.
The Squats had a strong sense of mutual preservation, as it had been known for rival leagues to go to war with each another. Such occasions could lead to lasting enmity, as Squats were inclined to remember deeds of infamy for many generations. The League of Thor and League of Grindel fought an unusually bitter war around 2,000 years ago when settlers from both sides clashed over the exploration of the Lost Stronghold of Dargon. The war that followed resulted in the destruction of several Strongholds and many key victories for the League of Thor including the capture of two other Leagues. Peace only came with the huge Ork invasion of Grunhag the Flayer which obliged all the Leagues to unify against their mutual foe. Although the war ended with the rout of the Orks, the two Leagues remained distrustful rivals and both sides considered the other side owing them debts of blood and honour.
- Emberg - 4 Strongholds
- Kapellar - 3000+ Strongholds
- Thor - 300+ Strongholds