Tanks (armored cars) were used for the first time at the Battle of the Somme during World War 1. More modern tanks were developed just before the end of the war.
Anti-aircraft guns, sub-machine guns, and automatic rifles that could be used by one man, were developed during World War 1. The hand grenade was in existence but was quickly developed for use during WW1.
Poison gases such as chlorine gas and mustard gas were first used in World War 1 although they had already been developed.
Nuclear weapons
Nuclear weapons
Nuclear weapons
weapons to be used by the Germans during world war 2
The fighter aircraft, bomber aircraft and tank were all introduced and extensively developed in WW1
The Manhattan Project where the atomic weapons were developed during the Second World War .
Arms Race
During world world war I
During World War I.
The first war planes military gattlin gun tear gas russian moison nagants along with frags and trench warfare
During the First World War
Nuclear weapons