Which type of grenade is primarily used for illumination?

The primary purpose of an illumination grenade is to provide light in a specific area during nighttime or low-light conditions. These grenades are designed to produce a bright light that allows for visual observation of the surrounding environment, making them useful in tactical situations where visibility is crucial for operations or for signaling.

Illumination grenades are often used in conjunction with other types of grenades, such as fragmentation or smoke grenades, to enhance situational awareness while maintaining the element of surprise or concealing movement. Their function is distinct from the others, which serve different tactical roles, such as creating smoke screens for cover, causing harm through explosive fragmentation, or igniting targets. This specificity in function underlines why the illumination grenade is distinctly classified and recognized for its role in light provision during combat scenarios.