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

A tank with reduced armor and weight for increased mobility.

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 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.

Armour made from steel plates joined by rivets.

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.