High-explosive shells are artillery projectiles designed to explode upon impact or at a predetermined distance. They contain a large amount of explosive material, which is triggered by a fuse. These shells are used in military operations to destroy enemy fortifications, vehicles, and personnel, making them a crucial component of modern warfare. The explosive force generated by high-explosive shells can cause significant damage over a wide area. They are typically fired from large-caliber guns or howitzers and are often used in conjunction with other munitions, such as shrapnel shells or incendiary rounds, to enhance their effectiveness on the battlefield.