High Explosive (HE) round: an artillery or mortar projectile containing explosive filler designed to inflict damage through blast and fragmentation effects.

Operated, moved, or controlled by fluid pressure, typically oil, used in mechanisms like recoil systems to absorb and manage energy.

A breech mechanism in artillery where a solid block slides horizontally to open and close the breech for loading.

Smoke grenades are pyrotechnic devices deployed by infantry fighting vehicles to create a visual screen, obscuring movement or positions from enemy observation or targeting.

A towed artillery carriage configuration where the gun is transported with its two wheels separated, allowing for easier deployment and lower profile when in firing position.