Fortifications are militaryconstructions designed for defensivewarfare. They have been used for many thousands of years, in a variety of increasingly complex designs. The practice of improving an area's defense is also known as "fortification". Many military installations are known as forts, although they are not always "fortified".
... They
present only one side of the Christian life, and in
order to compass the whole of it they must be
supplemented by counsels for integrity, bravery ...