Central powers: Germany, Austria-Hungary and the Ottoman Empire fighting agains allied powers.
Conscript: Men fourced by law to serve in an armed Force.
No mans land: An occupied the losing country had to pay.
Reparation: The compensation the losing country had to pay.
French warfare: The warfare between opposing armies who attack, conteratack and defend themselves from trenches due in the ground.
Tanks: Invented by the British it was a good invention to end the trench warfare, so that they could move to the enemies side in a secure way.
Steel helmet: to decrease the number of death and injured by bombs.
Uniforms: Camouflage colour.