Redan

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Redan

 

an open field fortification with two faces at an angle of 60°-120° to each other, protruding in the direction of the enemy. Small redans with blunt angles are called flèches.

In the 18th and 19th centuries, redans were built not only as separate fortifications, but also as continuous fortifications by connecting a series of redans with straight segments. Trenches with redan-type outlines were common in the fortified positions of most armies during World War I.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

ravelin, demilune

In fortifications, a projecting outwork forming a salient angle.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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