Tank will be the answer!
The first tank a British "Mark I" fought on September 1916 during the battle of flers- courcellette (one of the battles in world war I )
Nuclear weapons
Nuclear weapons
Nuclear weapons
Atomic bombs
Atomic bombs
Atomic bombs
Atomic bombs
Poisonous Gas
The Turtle, which was the first submarine used in combat.
H-bomb
Sonar was not introduced in World War 1.
The bazooka .