Rifleman (noun)

1. A soldier armed with a rifle, especially in the infantry.
2. A marksman who is skilled in using a rifle.

Origin:

Derived from the noun 'rifle' in the late 16th century.

Examples:

1. The rifleman provided cover fire for his comrades during the attack.
2. The rifleman took aim and shot the target with remarkable accuracy.
3. The elite unit was composed of skilled riflemen who were trained in marksmanship.
4. The rifleman was the first to spot the enemy in the distance.
5. Riflemen played a crucial role in the outcome of the battle.