In heraldry, the grenade is a military charge representing martial service, courage under fire, discipline, and readiness for combat. It is usually shown as a round explosive with a short neck or fuse, often with flames issuing from the top, and is sometimes blazoned as a grenade fired or flaming grenade. The symbol became especially associated with grenadiers, artillery, engineers, and other soldiers whose work involved explosives, siegecraft, or assault. Because it suggests controlled destructive force, the heraldic grenade can also imply technical skill, boldness, and the dangerous responsibilities of military office. Terminology and examples can be explored through the Parker Glossary of Heraldry entry for grenade and military heraldry resources from The Heraldry Society.

The grenade is particularly important in British and European military heraldry. The Grenadier Guards use the flaming grenade as their famous cap badge, reflecting their historic identity as elite troops originally trained to throw grenades. Similar devices appear in the badges and insignia of artillery, ordnance, and engineer units across many armies, where the flame and shell together express destructive power governed by expertise. In French heraldic and military tradition, the grenade is also strongly associated with grenadier units and elite infantry. Institutional examples can be seen through the British Army’s Grenadier Guards and collections such as the Imperial War Museums, which document military badges and insignia using the device.

As a coat of arms charge, the grenade may appear on the shield, in a crest, or as part of a badge, and it is commonly depicted sable, or, or proper with flames gules and or. Its meaning is usually more specific than many older heraldic symbols because it points directly to military occupation or achievement. It may commemorate service in war, participation in sieges, ordnance expertise, or a family’s connection with a regiment. In civic arms, a grenade can mark a garrison town, arsenal, battlefield association, or military institution. Visually compact and instantly forceful, the grenade remains one of heraldry’s clearest symbols of martial energy, technical command, and brave service in the face of danger.