Thesaurus Term/Concept: VULNERABLE DEFILE
| Identifier | 143222 |
|---|---|
| Class | MONUMENT TYPE |
| Status | Preferred |
| Index? | Yes |
| Scope Note | A pass, vulnerable to attack from the enemy but essential for the movement of troops and which, if captured, could divide a defending force. As a result such passes are defended with anti invasion defences such as pillboxes. |