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Fortresses - definition of Fortresses by The Free Dictionary

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What does fortress. mean? - Definition of fortress. - fortress. stands for A fortified place, especially a large, permanent fortification.. By

Definition.org - Fortress Hohensalzburg in Austria.

The Terminology of a Fortress - Fort Adams and The Fort Adams Trust

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Third plate with figures in the fortification, 1693; Les Forces de l'Europe, Ou Description des Principales Villes, Avec Leurs Fortifications: Dessignées PAR LES MEILLEURS Engineers, private party Celles () De La France

What is the difference between a fortress, castle and stronghold in terms of their military function? - Quora