ballistarius

{{Short description|Roman army infantrymen}}

{{RomanMilitary}}

File:Ballista (PSF) vector.svg

Ballistarius (plural ballistarii) were infantrymen, serving as artillerymen of the Roman army who handled ballistae.{{cite web | url=https://www.academia.edu/6693344/R._ZAGREANU_-_Proiectile_de_piatra_din_castrul_roman_de_la_Arcobadara_Roman_stone_projectiles_from_the_roman_fort_of_Arcobadara | title=Proiectile de piatră din castrul roman de la Arcobadara | publisher=Editura Accent | work=Revista Bistriței | date=2013

| accessdate=April 10, 2014 | author=Zăgreanu, Radu | pages=9}} They were classed as immunes, exempt from fatigue duty of entrenching or building.