Artillery shells are explosive projectiles designed to be fired from large-caliber guns, such as howitzers and cannons. They come in various types, including high-explosive, smoke, and illumination shells, each serving different military purposes. The shells are typically filled with explosives and can be equipped with fuses that detonate upon impact or at a predetermined time. When fired, artillery shells travel long distances and can cause significant damage to enemy positions, vehicles, and personnel. The effectiveness of these shells depends on factors like their design, the type of artillery used, and the conditions of the battlefield. Proper use of artillery can greatly influence the outcome of military engagements.