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".
... are made up of individuals and 5.7% have someone living alone who is 65 years of age or older. The average household size is 2.96 and the average family size is ...