Polish fortification on Hel
| 
| 
| 
|
|---|---|---|---|
| full picture 30 kB | full picture 35 kB | full picture 23 kB | full picture 33 kB |
Polish fortification near the river Narva (Narev)
| 
| 
|
|---|---|---|
| full picture 35 kB | full picture 44 kB | full picture 35 kB |
|
|
|
|
|
|---|---|---|---|
| full picture 30 kB | full picture 35 kB | full picture 23 kB | full picture 33 kB |
|
|
|
|
|---|---|---|
| full picture 35 kB | full picture 44 kB | full picture 35 kB |
