Type of internal combustion engine fuel, refined from crude oil.

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

High-Explosive Anti-Tank: a type of projectile that uses a shaped charge to penetrate armor.

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

A rifled gun has spiral grooves cut into its barrel.

Handheld or vehicle-mounted devices that release dense smoke to obscure vision, conceal movements, or screen friendly forces from enemy observation.

A torsion bar is a steel rod that resists twisting and serves as a spring in tank suspensions, with one end fixed to the hull and the other connected to a lever arm moving the road wheel.