Category:Fortifications by period

• Fortifications by century‎ (22 C)

C

• Cold War fortifications‎ (8 C, 6 P)
• Crusader castles‎ (7 C, 60 P)

D

• Dacian fortresses‎ (1 C, 3 P)

F

• Forts in England by period‎ (8 C)

M

• Medieval defences‎ (13 C, 25 P)

R

• Roman fortifications‎ (5 C, 14 P)

S

• Sassanian fortifications‎ (2 C, 8 P)

W

• World War I defensive lines‎ (2 C, 4 P)
• World War II defensive lines‎ (8 C, 63 P)