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

A breech mechanism in artillery where a cylindrical plug with spiral threads is rotated to open or close the breech.

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.