High-Explosive Fragmentation: ammunition that explodes on impact, releasing fragments.

Manual: a tank transmission in which the driver selects gear changes manually, typically using a clutch pedal and gear lever to engage gears.

A refined product derived from crude oil, used as a fuel for internal combustion engines. A volatile, flammable liquid mixture of hydrocarbons.

A rifled gun has spiral grooves cut into its barrel.

Unsprung: a suspension configuration in which a vehicle’s wheels or road wheels are mounted directly to the hull or chassis without springs, dampers, or other elastic elements, resulting in a rigid, non‑suspended ride.