|Vertical and horizontal garrisons as seen on the Adventure Map.|
Garrison is an Adventure Map location, that can contain more than one type of creatures. If the garrison belongs to a player, an enemy hero can not pass the garrison without fighting the armies inside. Like towns, also garrisons can be neutral, which means that no hero may pass it without a fight. Garrisons can be aligned both horizontally and vertically, and they are typically used in narrow passes to create an obstacle, that can not easily be passed.
It should be noted, that the map-maker can set garrison's troops to be impossible to remove. This means, that if a hero transfers creatures to the garrison, they will stay there permanently.