The spigot mortar was based on early infantry trench mortars. It had 400 artillery pieces bolstered by heavy artillery and mortars. The Chetniks were extensively supplied with thousands of rifles, grenades, mortars and artillery pieces. Gypsum mortar is not as durable as other mortars in damp conditions. Its artillery capabilities consist of 120mm mortars and 105mm light guns. Hezbollah has a relatively limited amount of mortars and artillery weapons. They also engaged us with light mortars and missile launchers. I style grenades against the deadly accurate Japanese knee mortars. Hezbollah also improved in their ability to use mortars and artillery during this time. The Free Syrian Army later began manufacturing its own mortars and rockets. Firing Lyddite shells, or using trench mortars, was tried. The Australian engineers planted explosives on several mortars and an ammunition dump. The brigades were composed of four battalions of eight mortars each. This created easy targets for mortars and snipers. Above that were facilities for barbette guns and mortars.