The birth of air-war was 1914 however it was ineffective and weak.
By WW2 that is a whole another story and how war was fought was changed entirely.
The use of heavier metal crafts and units became a breaking point in warfare which created the need for anti-artillery, air craft carriers and etc.
World War I was mainly trench-warfare and machine guns, the machine gun was unmatched and the old ways of war-fare changed. More weapons were needed, the history of World War I is the biggest tragedy on the face of this earth.
Endless machine gun fire, months and years of war fought for very substantially less space then expected due to machine gun.
Tanks and other weapons were used but not very effectively.
The riflemen was needed to pick off with accuracy, the Thompson gun was to move down and assault, and the mg was cut off an area completely with bullets and hold it off so that the advantage in a number of troops charging will not really be a matter.
With the use of covering fire from a distance this became effective again in world war to requiring for more assault needed combat, making the mg a less effective weapon.
You need to tell us which war.
lots of different weapons
what is the difference bewteen the world war 2 and the modern day war and how are the weapons different between the two wars
WW2 had literally thousands of weapons. Your question need s to be made more specific.
Because of the weapons that they were using.
Germany had thirty to forty different weapons in World War I. Some of these were artillery, pistols, special weapons such as a flame thrower, machine guns and ships.
They used rifles and very outdated weapons like shells, and guns.There were many different snipers to...
Two nuclear weapons ended World War 2.
different ways it started, better weapons and WWII ended with the first dropping of the atomic bomb.
Actually there was no best sniper rifle during world war 2 because it was never tested. Different countries used different weapons.
All countries fighting in World War 2 used weapons.
seventy-two different weapons were involved in the revolutionary war.