 |
| |||
| линия укрепления (fort line; fortification line or fortified barrier – usually landfil build-up preceeded with water trench/pounds with bridges Sattorus) | |||
|
| |||
| линия укрепления (fort line; fortification line or fortified barrier – usually landfil build-up preceeded with water trench/pounds with bridges Sattorus) | |||