quaternary weaponry: Among heavy infantry, who use the M-70 Havoc combat exoskeleton, there are three official categories of weaponry:

• primary weaponry: the heavy tribarrel, flamer, and target designator built into the exoskeleton;
• secondary weaponry: additional hardpoint-mounted weapons provided by a modular weapons back, such as the BP-400 Conflagration;
• tertiary weaponry: weapons carried by, rather than attached to, the exoskeleton.

Quaternary weaponry, therefore, is a term that shows up principally in aftermath reports, meaning “punched to death”. Insofar as the M-70 Havoc provides a twenty-four-fold physical strength multiplier to its wearer, the use of quaternary weaponry against armored troops, vehicles, buildings, and occasional field fortifications is far from unknown.

— Blackjacket’s Dictionary