Fusilier
/ˌfjuːzəˈlɪr/
Definition 1 of 2
Pro Tip 1/3Military Context
Used to refer to soldiers in specific regiments that traditionally carried rifles. 
The regiment's proud fusiliers stood in formation.
Pro Tip 2/3Historical Use
Fusilier is an old term, so it has a historical tone. 
The museum exhibition displayed uniforms worn by fusiliers.
Pro Tip 3/3National Specificity
Different countries might have various units called fusiliers. 
He learned about the British Royal Fusiliers in history class.