'Fortifications' in the Bible

The Lord has devoured; he has not shown mercy to all the dwellings of Jacob; he has broken down in his wrath the fortifications of the daughter of Judah; he has leveled to the ground, he has dishonored the kingdom and its commanders.

The Lord has become like an enemy; he has destroyed Israel; he has destroyed all its citadel fortresses; he has ruined all its fortifications and multiplied lamentation and mourning in the daughter of Judah.