Tanks & poison gas .
Airplanes, poison gas, machine guns and tanks.
poison gas machine guns and tanks
Poison Gas Tanks Aeroplanes
tanks, machine guns, poison gas, gas masks hope this helps
Tanks, aircraft, poison gas and the Dreadnought Battleship
Tanks Poison Gas Germ Warfare
First versions of tanks, machine guns(immobile), poison gases, and gas masks.
The new weapons of world war one were machine guns,Tanks,poison gas, and planes og WW1
machine guns, airships, airplanes, anticraft gun, poison gas, and tanks
The major weapons were machine guns, artillery guns, poison gas, tanks, zepplins and submarines.
1. Poison Gas 2. Tanks 3. Submarines 4. Machine Guns