Macquarie also suggested the construction of more permanent fortifications.

The second weakness of permanent fortification was its very permanency.

Construction ranges from simple sandbag walls to sophisticated, permanent fortifications.

It forms the substratum of every permanent fortification.

He published a "Treatise on permanent and temporary fortification".

The casemate carriage was designed to fire from casemates which were chambers in permanent fortifications.

Only in the 1770s did the city acquire permanent fortifications.

More permanent fortifications were built during the first half of the 19th century in response to feared foreign attacks and new threats to the British empire.

Lord Strange returned and attempted to besiege the town, which had no permanent fortifications.

Charles would construct the first permanent fortification in the city, doing so on that same island.