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leather cannon
The leather cannon, or leather gun,〔 Adair (1997), pg. 142–3〕 was an experimental weapon, first used in northern Europe in the 1620s. The aim was to construct a light and cheap weapon that would bridge the gap between the handy musket and the heavy stationary cannon. The varnished leather from which the gun got its name acted merely as the outer protective surface of the piece.
The first working examples were built by Swiss and Austrian engineers. The first attempts to use them in combat were made by Gustavus Adolphus of Sweden, during the Polish–Swedish War (1626–1629), but were largely unsuccessful.〔 Brzezinski (1993), p. 17–20〕 They were used extensively during the British Civil Wars in the 1640s and 50s, especially in Scotland.
==Background==
Cannon in the early 17th century were of a plethora of calibers. In order to simplify logistics Gustavus Adolphus reduced the number of calibers to guns firing 24-, 12- and 6-pound cannonballs (roughly 10, 5 & 2.5 kg) . Guns made from cast iron were too heavy to be moved during battle, and were limited to use in fortresses or on board ships. Guns used in the field were limited to bronze cannon, but only the very lightest pieces could be moved during battle especially if the terrain was uneven.
Gustavus Adolphus' tactics were based on use of effective firepower. While heavy cannon were effective at the start of the battle, they could not be moved from the hill that they usually were deployed on (the guns themselves weighed from roughly 300 kilograms to 3 tons). As such, the artillery could not respond effectively to developments in battle.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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