Fortification, Military Science & History of Defense Structures

Fortification, in military science, any work erected to strengthen a position against attack. Fortifications are usually of two types: permanent and field. Permanent fortifications include elaborate forts and troop shelters and are most often erected in times of peace or upon threat of war. Field

THE MODERN AND CONTEMPORARY FORTIFICATION: Fundacio Privada Cultural

5 Odd Military Fortifications: Unconventional Defenses

Fortification - Wikipedia

Hellenistic fortifications - Wikipedia

Rumble in the concrete jungle: what history teaches us about urban defense

Ukraine's Zelensky Orders Construction of Defenses to Hold Back Russia - WSJ

Russian fortifications present an old problem for Ukraine - Engelsberg ideas

Fortification - Wikipedia

DVIDS - News - Fort Indiantown Gap was not the first military fortification in area