a structure used to defend against attack

a fortification built before World War II to protect France's eastern border; initially considered to be impregnable, it was easily overrun by the German army in 1940

German fortifications facing the Maginot Line

an embankment built around a space for defensive purposes

one of the defensive structures used in fortifications, such as castles, along with curtain walls.

projecting part of a rampart or other fortification

a fortification of earth; mostly or entirely below ground

a large building formerly occupied by a ruler and fortified against attack

the arrangement of defensive fortifications to protect against enemy fire

an entrenched fortification; a position protected by trenches

a fortification built before World War II to protect France's eastern border; initially considered to be impregnable, it was easily overrun by the German army in 1940

German fortifications facing the Maginot Line

an embankment built around a space for defensive purposes

one of the defensive structures used in fortifications, such as castles, along with curtain walls.