flèche(redirected from Fléche)
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high, tapering structure crowning a tower and having a general pyramidal outline. The simplest spires were the steeply pitched timber roofs capping Romanesque towers and campaniles. In later Romanesque architecture the spire was commonly octagonal, topping a square tower.
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a field fortification used until the early 20th century. Flèches, which were sometimes permanent, were a type of redan with two faces, each 20–30 m long, that formed an obtuse angle, with the apex pointing in the direction of the enemy. They were built to cover important axes and points; an example is the Bagration flèches at the battle of Borodino of 1812, which were located near the village of Semenovskaia.