Some of the newest weapons unveiled during WWI included the machine gun, and poisonous gas. Both huge reasons as to why "The Great War" was so deadly.
The atomic bomb
Tear Gas and Mustard Gas
The most common one that was used as a weapon in World War 1 is called the Artillery
The Thundergun.
machine guns
The most common method was with artillery.It is NOT a biological weapon, it is a chemical weapon.
bomb
Atomic bombs
Atomic bombs
Atomic bombs
Atomic bombs
Atomic bombs