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".
... January 20 - Dmitri Ivanovich Mendeleev, Russian chemist and inventor of the Periodic table
May 19 - Auguste Molinier, French historian
July 14 - ...