Garrison Commander is an additional title for Victor the Castellan.
Garrison Commander is a Level 1 title for Victor, a Governor in Civilization VI: Rise and Fall.
Effects[]
Units defending within the city's territory get +5 
Combat Strength.
Units defending within the city's territory get +5 Combat Strength. Your other cities within 9 tiles gain +4 Loyalty per turn towards your civilization.
Civilopedia entry[]
A garrison is a standing force of soldiers assigned to a fortification. The garrison commander leads these troops and is responsible for maintaining the fortifications as well. In times of peace, this may be a very boring assignment. But in times of war, the garrison commander may have a much-enlarged force and handle the military operations of the nearby territory.
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