Morzek Garrison, a typical garrison
The term Garrison denotes a major military station.
In the context of Guild Wars it is used mostly for the fortified stations of the Kournan military, which can be found spread all over Kourna. Most explorable areas in Kourna have a garrison, usually near the center.
Most garrisons are equipped with long-range catapults and able to launch a Kournan Siege attack.
The five garrisons in Jahai Bluffs, Arkjok Ward, Sunward Marches, Dejarin Estate, and Marga Coast contain the only bosses for getting the five Dervish avatars in PvE.