为了控制非阿拉伯、非伊斯兰地区，阿拉伯游牧部落were taken from the desert by the ruling Arab elite, conscripted into Islamic armies, and settled into garrison towns as well as given a share in the spoils of war. The primary utility of the Arab-Islamic garrisons was to control the indigenous non-Arab peoples of these conquered and occupied territories, and to serve as garrison bases to launch further Islamic military campaigns into yet-undominated lands. A secondary aspect of the Arab-Islamic garrisons was the uprooting of the aforementioned nomadic Arab tribesmen from their original home regions in the 阿拉伯半島 in order to proactively avert these tribal peoples, and particularly their young men, from revolting against the Islamic state established in their midst.
In Israel, a "garrison unit" (希伯来语： חיל מצב) is a regular unit defending a specified Israeli zone in need of protection from attack from combatants. Israeli garrison units placed in the約旦河西岸地區的領土糾紛 are recognized under 聯合國安理會242號決議 as occupied pending peaceful recognition by all regional combatants.
It was an old custom in ancient Italy to send out colonies for the purpose of securing new conquests. The Romans, having no 常備陸軍（英语：standing army）, used to plant bodies of their own citizens in conquered towns as a kind of garrison.