How did war change between 1914 and 1918?

Between 1914 and 1918, warfare evolved significantly due to technological advancements and strategic shifts. The introduction of machine guns, tanks, and chemical weapons transformed battlefields, leading to trench warfare characterized by stalemate and massive casualties. Additionally, the war saw increased use of aircraft for reconnaissance and bombing, as well as naval blockades that impacted supply lines. Overall, the nature of warfare shifted to a more industrialized and total approach, involving entire nations and economies.