Grenade (insignia)

Grenade insignia are symbols featured on the uniforms of numerous military units. The emblem represents a stylized old style of hand grenade, with a rising flame. The insignia is featured on the uniforms of such military units such as:

Old-style grenade used by the Royal Regiment of Fusiliers

Old-style grenade, used by the military academies, notably the école spéciale militaire de Saint-Cyr

Classic-style grenade, used by many units in the French Army, notably the Infantry regiments

Legion-style grenade, used by the French Foreign Legion

Antler-style grenade, used by the Gendarmerie Nationale

Flaming-style grenade, used by the Carabinieri, the Bersaglieri and some other Army units.

Classic-style grenade, used by the Grenadiers, the Infantry and some Cavalry units.

Old-style grenade, used by some Cavalry units.

...
Wikipedia