Artillery, in military science, crew-served big guns, howitzers, or mortars having a caliber greater than that of small arms, or infantry weapons. The term is more properly limited to large gun-type weapons using an exploding propellant charge to shoot a projectile along an unpowered trajectory. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.