81mm mortar

An 81 mm mortar is a medium-weight mortar. It is a smooth-bore, muzzle-loading, high-angle-of-fire weapon used for long-range indirect fire support to light infantry, air assault, and airborne units across the entire front of a battalion zone of influence.

Many countries use or used an 81 mm mortar in their armed forces. Examples are:
 * Finland – 81 KRH 71 Y
 * Germany - Granatwerfer 34
 * Italy – Mortaio da 81/14 Modello 35
 * Myanmar – BA-90 mortar
 * United Kingdom – L16 81mm mortar
 * United States – M252 mortar