Yes, shotguns were used, although it was only until later in the war that they became standard issue. Some soldiers privately purchased hunting shotguns and modified them for used in the trenches, as they were found to be highly useful in the cramped environment of the trenches, where they became known as "trench guns".
They each wanted to promote their competing political ideologies.
You can get them anywhere from Bezid.com to Ebay.com
Probably artillery; it was responsible for many of the deaths in World War 1.
The nuclear bomb
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.
Trench guns, first used in the first world war may also be referred to as combat shotguns, riot shotguns, trench shotguns, bayonets, muskets or blunderbusses.
Invented by French chemist Claude Berthollet, chlorine gas was first used as a weapon by the military during the first World War in 1914. Chlorine gas was first used as a disarming weapon, and later as a fatal poison.
The atomic bomb
the single shot rifle with bayonet
Bay State shotguns were made prior to World War 2.
The Winchester M97, the first pump action shotgun, was massively produced for military use in World War 2. They did not use trench warfare in World War 2. It was a mobile war with modern weaponry.
There can be no doubt that the most deadliest weapon of world war 2 was the nuclear bombs that dropped on Hiroshima.
fatman, little boy and trinity they are nuclear bombs used on japan (exept trinity) at the end of the second world war.