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

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 fire control system relying on optical sights and manual input for aiming and range estimation without computer assistance.

A tank with medium weight and armor, balancing mobility and firepower.

A rifled gun has spiral grooves cut into its barrel.

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.

Armour made by welding and rolling homogeneous steel plates.