EntityQ92080· pop 6· linked from 308 articlespolygonal fortSign in to savetype of fortificationConnectionswatchtowerEntitystar fortEntitykasbahEntitysconceEntitycoastal defence and fortificationEntityParisEntityGermanEntityLithuaniaCountryMaltaCountryWarsawEntityNapoleonPersonWorld War IConceptOttoman EmpireConceptBaltic SeaEntityCologneEntityFrench RevolutionEntityRhineEntityHanoverEntityAmerican Civil WarConceptInternational Standard Book NumberEntityCategoriesFortification (architectural elements)Fortifications by typeFrench inventionsWarfare of the late modern period