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Mortar (weapon)

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A mortar is a specialized type of artillery weapon designed to launch explosive shells. These projectiles are often technically referred to as bombs.

M120 Mortar in Zabol Province, Afghanistan
M120 Mortar in Zabol Province, Afghanistan

Unlike standard field guns that fire in relatively straight lines, mortars are primarily used for indirect fire. This means they launch ammunition along high, arching ballistic trajectories. This high angle allows the weapon to reach targets that are hidden behind obstacles like hills or buildings. Because of this unique flight path, mortars are essential for providing close fire support to troops on the ground.

Modern mortars are typically lightweight and man-portable. A standard setup consists of a metal tube, which is usually smooth-bore but can sometimes be rifled. This tube is fixed to a base plate designed to spread out the recoil, or the backward kick, from the launch. The weapon also uses a lightweight bipod mount and a sight for aiming.

To understand the mechanism of a modern Stokes mortar, imagine dropping a weight into a tube. When a soldier drops a mortar bomb into the tube, an impact-sensitive primer at the base of the bomb hits a firing pin.

WilfredStokeswithMortar
WilfredStokeswithMortar

This contact causes a detonation that drives the bomb out of the tube. The original Stokes design could fire 25 bombs per minute with a maximum range of 800 meters.

0 Vimy - Mortier de tranchée (2)
0 Vimy - Mortier de tranchée (2)

Mortars have a long and varied history spanning hundreds of years. The earliest recorded use occurred during a Korean naval battle in 1413.

Improvised-mortars-batey-haosef-1-1
Improvised-mortars-batey-haosef-1-1

Korean gunsmiths developed a gourd-shaped mortar known as the wan'gu. Ch'oe Hae-san is generally credited with its invention. In 1453, mortars were used during the siege of Constantinople by Mehmed the Conqueror. Later, in 1456, Ottoman Turks used seven mortars at the siege of Belgrade. These mortars fired stone shots so high they reached one Italian mile in height.

Venetian siege of Acropolis
Venetian siege of Acropolis

As technology progressed, mortars became more mobile and specialized. In 1701, Baron Menno van Coehoorn invented a transportable mortar. This version fired exploding shells with fuses lit by hot gases. This innovation led to the creation of new naval ships called bomb vessels. During the American Civil War from 1861 to 1865, mortars were used in many ways. General Ulysses S. Grant even reported making improvised mortars by boring out logs of tough wood and binding them with iron bands.

Virginia, Petersburg, Mortar Dictator - NARA - 533349
Virginia, Petersburg, Mortar Dictator - NARA - 533349

Different types of mortars serve very different tactical roles. During World War I, the German Army used short-range trench mortars called Minenwerfers.

German 7.58 cm minenwerfer
German 7.58 cm minenwerfer

These were used directly from frontline trenches. In contrast, the German Karl-Gerät was a massive heavy siege mortar.

Karl6
Karl6

Another unique design is the spigot mortar. Instead of a tube, it uses a solid rod called a spigot. The projectile fits over this rod to be launched.

A hedgehog launcher on display
A hedgehog launcher on display

Spigot mortars are often lighter and simpler to manufacture than traditional tube mortars.

Modern warfare also utilizes mortar carriers and gun-mortars. Mortar carriers are vehicles that carry the weapon as a primary tool.

M113-mortar-carrier-id2008-5
M113-mortar-carrier-id2008-5

These can range from improvised civilian trucks to advanced armored personnel carriers like the M113. Gun-mortars are more complex hybrid weapons. They are usually breech-loaded and mounted on armored vehicles.

2B9 Vasilek mortar-4058
2B9 Vasilek mortar-4058

These weapons can perform both direct fire against specific targets and indirect fire against areas. They combine the features of a modern cannon with the high-angle capabilities of an infantry mortar.

Today, the evolution of the mortar continues through advanced systems. The Israeli Merkava tank even uses a mortar as a secondary armament.

M113-mortar-carrier-id2008-5
M113-mortar-carrier-id2008-5

Some systems, like the AMOS, use a 120 mm automatic twin-barrelled turret. This shows how the mortar has moved from simple iron bowls to highly integrated combat technology. Whether they are small enough for one person to carry or mounted on a massive self-propelled chassis, mortars remain a vital part of military systems.

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🖼️ Images & Media (19)
File:M120 Mortar in Zabol Province, Afghanistan.jpg
M120 Mortar in Zabol Province, Afghanistan.jpg
File:Venetian siege of Acropolis.jpg
Venetian siege of Acropolis.jpg
Virginia, Petersburg, Mortar Dictator -...
File:German 7.58 cm minenwerfer.jpg
German 7.58 cm minenwerfer.jpg
File:WilfredStokeswithMortar.jpg
WilfredStokeswithMortar.jpg
File:0 Vimy - Mortier de tranchée (2).JPG
0 Vimy - Mortier de tranchée (2).JPG
File:Karl6.jpg
Karl6.jpg
File:M113-mortar-carrier-id2008-5.jpg
M113-mortar-carrier-id2008-5.jpg
File:2B9 Vasilek mortar-4058.JPG
2B9 Vasilek mortar-4058.JPG
File:The Home Guard 1939-45 H12299.jpg
The Home Guard 1939-45 H12299.jpg
File:A hedgehog launcher on display.jpg
A hedgehog launcher on display.jpg
File:Improvised-mortars-batey-haosef-1-1.jpg
Improvised-mortars-batey-haosef-1-1.jpg

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