Fyrd
In Anglo-Saxon times this was the name given to the peasant army in which all free men had to serve in times of need..
Fuhrer
A leader, especially one exercising the powers of a tyrant.
Frontier
A border between two countries.
Free Trade
Trade between nations without protective customs tariffs
Fort
A building with a defence system that has troops stationed in it. An army post.
Forest Law
This law, introduced by William the Conqueror in 1072, makes all parts of the forest from animals to the leaves on the trees the property of the King. Anyone found killing or taking any part of the forest would be guilty of taking the King's property.
Force
A large group of armed men, an army.
Fire Step
The fire step was built about two to three feet above the floor of a trench. It enabled men to see over the wall of the trench and to fire on any enemy advance.
Fire Ship
A military vessel loaded with explosives and combustible material and set adrift among enemy ships or fortifications to destroy them.
Field Gun
A cannon, mounted on wheels to enable it to be positioned or moved by a marching army.
