STOKES mortar 81mm

In 1915, Wilfred Stokes designed an 81mm mortar with the idea that British forces could have a weapon which they could face the efective German “Minenwerfers” (mine launchers). Initially the “Stokes 3-in mortar” was rejected by the British Army because it could not use the mortar ammunition available at that time, but finally permission was granted for mass production. The Stokes mortar was a very simple weapon composed by a smoothbore metal tube, a base plate and a bipod. It could fire up to 25 grenades per minute at a maximum distance of about 700 meters, a pretty poor range for a weapon of this caliber, although after the WWI, improvements were made in its ammunition that allowed to achieve a range quite similar to other mortars of the time.

STOKES mortar gallery and more info


Información adicional

Ficha Completa
Country of origin

United Kingdom


Infantry mortar

Entered service




Combat weight

47 kg


1 x 81mm smoothbore muzzle load mortar

Rate of fire, (maximum)

Originally: 25 grenades per minute – Later: 30 grenades per minute

Shell weight

4.84 kg (HE)

Shell range

Originally: 730 meters – Later: 2,285 meters

Warhead, (explosive charge)

Weight: 1 kg – Explosive: Amatol