Another fun World War I oddity is the
Grenade No. 12. Also known as the "hairbrush" grenade, it had a pound of ammonal (ammonium nitrate and aluminum) in a box strapped to a handle, with a total weight of 3 pounds (1.36 kilos). Due to this high mass, it can only be thrown 3/4 of a character's normal throw distance. It's a C:4 concussive grenade and is equipped with a 5-second time fuze. It's so bulky, heavy, and clumsy that it's just an absurd weapon. They apparently were carried using a string through a hole in the handle, and a (posed) picture exists of a Frenchman with at least 7 of these grenades, a total of almost 10 kilograms of grenade. They entered service in spring 1915, and I believe left service at the end of that year.