During World War I, the use of tanks, machine guns, trenches, poison gas, and submarines were seen. These new weapons caused even more deaths and allowed newer techniques to be put into use.
In this war there were more sneak attacks than in the past because of the new technology such as the submarines. In ancient wars, sneak attacks were something inevitable because it was impossible to attack without getting found out. There were many new techniques formed such as the Schlieffen Plan, which was to attack as quick as possible and retreat. The trenches were a major part of world war I. The trenches were very unsanitary and dangerous to be in but they were a huge technique that the two fronts used. Soldiers would hide in these trenches and attack others without getting attacked. The land in between the trenches was called the "no man zone" because anyone who stood on that land would immediately get killed. The new weapon and technology developed in this war marked the change of how the wars are fought