81 mm 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 of light infantry, air assault, and airborne units across the entire front of a battalion zone of influence.

Many countries use or have used an 81-mm mortar in their armed forces. Examples are:
 * Canada - L16 81mm mortar
 * Finland – 81 KRH 71 Y
 * France – Brandt Mle 27/31
 * Germany – Granatwerfer 34
 * Greece – E44-E 81 mm Mortar
 * Italy – Mortaio da 81/14 Modello 35
 * Myanmar – BA-90 and MA-8
 * United Kingdom – L16 81mm mortar
 * United States – M252 mortar
 * Turkey – MKE 81mm UT1 & MKE 81mm NT1

Warsaw Pact countries and China use a similar 82 mm caliber for the same purpose.