World War I was significantly different from previous wars in many ways due to advances in science and technology. One of the earliest inventions that complete

World War I was significantly different from previous wars in many ways due to advances in science and technology. One of the earliest inventions that completely changed warfare at the start of World War I was the machine gun, which saw its first large-scale use in the 1914 German campaign against Belgian forts. Machine guns had been used in the Russo-Japanese War, but not to this extent and not with such terrible efficiency. Dan Carlin covers this topic in great detail in his fascinating 23h+ podcast series "Blueprint for Armageddon".