what is mortar fire

A mortar is an indirect fire weapon that launches explosive shells in high-arcing ballistic trajectories). It is usually a simple, lightweight, man-portable, muzzle-loaded weapon consisting of a smooth-bore metal tube fixed to a base plate with a lightweight bipod mount and a sight). Mortars are typically used as indirect fire weapons for close fire support with a variety of ammunition). The defining features of a mortar are its responsiveness, high-angle arching trajectory (above 45°), low velocity, and relatively short range. Mortars are short-range weapons and often more effective than long-range artillery for many purposes within their shorter range. They can land bombs on nearby targets, including those behind obstacles or in fortifications, such as light vehicles behind hills or structures, or infantry in trenches or spider holes). Mortars are also highly effective when used from concealed positions, such as the natural escarpments on hillsides or from woods, especially if forward observers are being employed in strategic positions to direct fire).