skos:altLabel | - fortifications
- bastion
- bastions
- Bulwark
- Bolwerk
- military fortification
- bastion fortress
- bastioned
- bulwarks
- bulwark
- Bastion#Types
- Bollwerk
- Demi-bastion
- Demi-bastions
- bastion-type
- bastioned trace
- corner bastion
- corner bastions
- demi-bastion
- demi-bastions
- embattled bastions
- half-bastioned
- outer bastions
- semi-circular towers
- semicircular bastion
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