A number of weapons were used in WWII that either did not exist in WWI or were only first experimentally used: The tank was used in both wars, but only in WWII did it become a decisive weapon. The aircraft carrier was first used in WWII, radio communicatios between vehicles was a new 'weapon' that enabled plans of attack or defense to be changed at a moments' notice. Rockets were used in WWII in the form of ship-, vehicle- or aircraft-borne weapons systems, and as the first ballistic missiles t be launched at unseen targets a great many miles away from the launch-site. Rockets were also used to aid the take-off of heavily burdened aircrft as well. The helicopter was first used in WWII as wel.
Radar and ASDIC (early version of sonar) were both first used in WWII.
When World War 2 begun, most soldiers were equipped with bolt-action rifles.
It was the ultimate weapon to end the war.
The atomic bomb
machine guns
They did not have the RPG in World War 2. It came into being in 1961. It did emulate the Bazooka weapon which was around in the Forties.
The atomic bomb was the first nuclear weapon ever made during World war two and it was the first weapon that have been tested before Hiroshima was under attack.
There can be no doubt that the most deadliest weapon of world war 2 was the nuclear bombs that dropped on Hiroshima.
hydrogen bomb
the tank
You can get them anywhere from Bezid.com to Ebay.com
Propaganda.
It was the ultimate weapon to end the war.
The atomic weapon.
The A-bomb.
Atomic bomb.
The Atomic Bomb?
The nuclear bomb.
The Atomic bomb(s) .