Fusiliers are soldiers who serve in a specific type of infantry unit, known for their proficiency with firearms. However, there are several synonyms for the word "fusilier." One of the most common synonyms is "rifleman," which describes a soldier who has specialized in the use of rifles. Another synonym for "fusilier" is "marksman," which refers to a soldier who has exceptional accuracy with firearms. Other synonyms for "fusilier" include "sharpshooter," "sniper," and "infantryman." Regardless of the specific term used, all of these words describe soldiers who are highly skilled in the use of firearms and play an important role in military operations.