3/2/2024 0 Comments Bastion definition in english![]() To augment this change they placed v-shaped outworks known as ravelins in front of the bastions and curtain walls to protect them from direct artillery fire. The resulting construction was called a bolwerk. ĭuring the Eighty Years War (1568–1648) Dutch military engineers developed the concepts further by lengthening the faces and shortening the curtain walls of the bastions. This was exemplified by the campaigns of Charles VII of France who reduced the towns and castles held by the English during the latter stages of the Hundred Years War, and by the fall of Constantinople in 1453 to the large cannon of the Turkish army. ![]() As military architecture, the bastion is one element in the style of fortification dominant from the mid 16th to mid 19th centuries.Įvolution One of the semi-circular bastions at Deal Castle, a Device Fort on the south coast of Englandīy the middle of the 15th century, artillery pieces had become powerful enough to make the traditional medieval round tower and curtain wall obsolete. Compared with the medieval fortified towers they replaced, bastion fortifications offered a greater degree of passive resistance and more scope for ranged defence in the age of gunpowder artillery. The fully developed bastion consists of two faces and two flanks, with fire from the flanks being able to protect the curtain wall and the adjacent bastions. Drawing of a bastionĪ bastion or bulwark is a structure projecting outward from the curtain wall of a fortification, most commonly angular in shape and positioned at the corners of the fort.
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