A grenade is a small explosive device designed to be thrown by hand or launched from a weapon. It typically contains an explosive charge and a fuse that ignites the charge after a short delay. Grenades are used in military operations for various purposes, including offensive attacks, defensive measures, and signaling. There are different types of grenades, such as fragmentation grenades, which disperse shrapnel upon explosion, and smoke grenades, which create a smoke screen for concealment. They are essential tools in modern warfare, providing soldiers with versatile options for combat situations.