Like its sister the Longbow, the Crossbow was designed as a light artillery piece - ready to be deployed at a moment's notice to support armoured attacks and insertions. However the Crossbow has a much more specific focus, and is used for direct support and interdiction. Armed with a high powered laser (similar to that of the Scimitar Heavy Tank), it is most often used for flanking anti-armour support.

Delivered into place by nimble Raven dropships, it can easily fire and manoeuvre, taking its cue from the light skirmish infantry of ancient Earth. Positioned as a sniping support unit, it burns enemy units out of hiding in a way that the more lumbering Scimitar cannot.