Fortifications are military constructions and buildings designed for defense in warfare. Humans have constructed defensive works for many thousands of years, in a variety of increasingly complex designs. The term is derived from the Latin fortis ("strong") and facere ("to make").
Defensive wall Star fort Eastbourne Redoubt Polygonal fort Siege Wire obstacle Rajasthan Casemate Martello tower Pakistan Bastion Gun turret Atlantic Wall Parapet Maginot Line Bunker Jodhpur Great Wall of China World War II Poliorcetics Castle walls Grad (Slavic settlement) Kot Diji Fort Land battery Bastle house Bala Hisar Fort Gujarat Sultanate Derawar Fort Eleutherae Bourtange Banquette Sangar (fortification) Fort Knox (Maine) Compound (fortification) Reduit India Fort Drum (El Fraile Island) Counterscarp Stalin Line Diades of Pella
