-
Trench warfare is a type of land warfare using occupied fighting lines consisting largely of military trenches.
-
Gas masks used in World War One were made as a result of poison gas attacks that took the Allies in the trenches on the Western Front by surprise.
-
Toxic war gas with sulfide based compounds that raises blisters and attacks the eyes and lungs.
-
The Zimmermann Telegram was a secret diplomatic communication issued from the German Foreign Office in January 1917 that proposed a military alliance between Germany and Mexico.
