ABATIS: A barricade created from felled trees which have
their branches extending towards the path of expected enemy attack.
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EMBRASURE: An opening cut in a parapet to enable artillery to
fire while still under protection of the parapet.
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GABION: A cylindrical basket which is open at both ends. When
filled with dirt, it can be used as a revetment to form parapets of the trenches.
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| IRONCLAD: A 19th-century warship having sides armored with
metal plates. |
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| LUNETTE: A crescent-shaped earthwork |
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| PARAPET: A protective wall of logs, sandbags, or gabions.
Approximately four feet high with a shallow ditch behind it and dirt packed against
the exterior side. |
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| REDAN: A triangular earthwork used to cover a point in its
rear, such as a bridge or river ford. |
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| REDOUBT: A square or rectangular earthwork |
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SAP: A zig-zag trench constructed perpendicular to an enemy
fortification, for the purpose of advancing closer to the enemy lines without assaulting.
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| SAP ROLLER: A large gabion, approximately six feet long and
four feet in diameter. Generally packed with twigs or cotton, and rolled at the head
of a sap to protect the men who are digging the trench. |
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