Presumably this was a defensive fortification of some farming complex.

He also oversaw the work on defensive fortifications around Wilhelmshaven.

In addition to the dockyard itself, defensive fortifications were built to protect it from attack.

The 10th century Qansayar mentioned that it had a defensive fortification.

Thus the French were here driven back to their defensive fortifications but no farther.

Briand adopted a foreign policy of both peace and defensive fortification.

However, it was stopped three days later by another river coupled with extensive defensive fortification.

Such a term may be used to describe the approaches to an "ideal" defensive fortification.

He built a line of defensive fortifications to strengthen the French presence.

The 1850s and 1860s saw further development of the system of defensive fortifications around Sydney.