Subcategories
This category has the following 9 subcategories, out of 9 total.
C
E
- 20th-century forts in England (12 P)
M
S
- Séré de Rivières system (72 P)
- Soviet Union fortresses (2 P)
W
Pages in category "20th-century fortifications"
The following 19 pages are in this category, out of 19 total. This list may not reflect recent changes.