The phrase 'garrison troops' is grammatically correct and can be used in written English.
Example: The garrison troops were sent to protect the fort from invasion.
Ottoman sovereignty had been restored in Baghdad, but the stability of central Iraq continued to be disturbed by turbulent garrison troops and by Arab and Kurdish tribal unrest.
Narai became suspicious of French designs; and, to placate him, Phaulkon engaged the French garrison troops as mercenaries in the service of Thailand.
(The Philistines have been identified with the so-called Peleset, who were used as garrison troops and mercenaries by Ramses III).
The Rumanians managed, in a few hours to round up most of the Iron Guard, to drive the German garrison troops out of the city, and trap the German Minister to Rumania, Baron Manfred von Killinger.
Top satrapy officials and the commander of the garrison troops stationed in the province were directly responsible to the king, and periodic inspections were carried out by royal officials.
The Mamlūks had always been obliged to share power, to one extent or another, with groups of local notables tribal sheikhs in the countryside and urban-based groups associated with the garrison troops, the bureaucracy, the merchants, or the religious elite.
First they came as friends, while simultaneously and surreptitiously garrisoning troops around his kingdom.
Emperor Heraclius had sent all his available garrisoned troops into Syria, towards Ajnadayn, to hold the Muslim troops at the Syria-Arabia border region.
Ever since Britain had permanently garrisoned troops in Massachusetts to put down the brewing rebellion in 1768, opposition to standing armies ran deep among Americans.
Perhaps because of the Rothschilds' Jewish heritage, the Germans seized Lafite and the neighboring Mouton Rothschild, run by a different branch of the family, in 1940, and used the estates to garrison their troops.
