many new weapons came around during the first world war so next time finish the question but the most important guns were flamethrower mounted machine guns airplanes started being used as a weapon. submarines and tanks were developed around this time although no one was fully trained in using them so there help was minimal this was the creation of trench warfare so barbwire would play a major role in the war hand grenades and poison gases
Sonar was not introduced in World War 1.
THE MACHINE GUN and THE POISONUS GAS
mustard gasthe tanktrench warfare. (although begun in the American Civil War)
the tank
In World War 2 the Germans introduced the V2 rocket, a terrifying new offensive weapon. In WW1 poison gas was considered the most terrifying weapon.
The tank. Though not wheeled, gas was also used for the first time in WWI.
A long range German artillery weapon made by Krupp in WW1.
the first ever mass produced tank was developed and used near the end of WW1
The machine gun caused trench warfare to be a necessity as 90%+ of the casualties of WW1 were from this weapon. The use of Napoleonic tactics against new technologies was disastrous.
The fighter aircraft, bomber aircraft and tank were all introduced and extensively developed in WW1
broken pistolthe zeppelin was the least important weapon in ww1.
The U-Boat