Charge

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Satchel charge

A satchel charge is a demolition device, primarily intended for combat, whose primary components are a charge of dynamite or a more potent explosive such as C-4 plastic explosive, a carrying device functionally similar to a satchel or messenger bag, and a triggering mechanism; the term covers both improvised and formally designed devices.

In World War II, combat engineers used satchel charges to demolish heavy stationary targets such as rails, obstacles, blockhouses, bunkers, caves, and bridges. The World War II-era United States Army M37 Demolition Kit contained eight blocks of high explosive, with 2 priming assemblies, in a canvas bag with a shoulder strap. Part or all of this charge could be placed against a structure or slung into an opening. It was usually detonated with a pull igniter. When used as an anti-tank weapon, charges were sufficient to severely damage the tracks. 4 kg (8.8 lb) charges were enough to destroy medium tanks.

Later in the Vietnam War, Vietcong and North Vietnamese soldiers assigned elite sappers to stealthily penetrate defenses of sites controlled by anti-Communist forces. Often, this meant using satchel charges as well as Bangalore torpedoes to successfully blast through barbed wire entanglements, minefields, structures, and other fortifications. The later U.S. M183 Demolition Charge Assembly contained 20 lb (9.1 kg) of C-4 in each satchel, and could be used with a timed fuse. In the Second Battle of Fallujah in Iraq, U.S. M2 20 lb assault demolitions were used to collapse houses being used as fighting positions by insurgents.

Satchel

A satchel is a bag, often with a strap. The strap is often worn so that it diagonally crosses the body, with the bag hanging on the opposite hip, rather than hanging directly down from the shoulder. They are traditionally used for carrying books. The back of a satchel extends to form a flap that folds over to cover the top and fastens in the front. Unlike a briefcase, a satchel is soft-sided.

History

Roman legionaries carried a satchel (a loculus).

The satchel became a fashion accessory and was popular during the 17th century.

A carriel is "a small leather satchel from Colombia with a long history dating back 400 years".

A photo from the Bain News Service shows Camille Saint-Saëns carrying a satchel in the United States in 1915.

Letter carriers in many countries (including the United States) carry a mail satchel.

School bag

The traditional Oxford and Cambridge style satchel is a simple design that features a simple pouch with a front flap. Variations include designs with a single or double pocket on the front and sometimes a handle on the top of the bag. The classic school bag satchel often had two straps, so that it could be worn like a backpack, with the design having the straps coming in a V from the centre of the back of the bag, rather than separate straps on each side. This style is sometimes called a satchel backpack.