The major global conflict involving trench warfare and total war tactics from 1914 to 1918 was World War I. This conflict, known for its devastating scale and loss of life, primarily pitted the Allies against the Central Powers. Trench warfare, characterized by elaborate networks of fortified positions, led to a stalemate on the Western Front, exemplified by bloody battles such as Verdun and the Somme. The war's total war strategy mobilized entire nations for the conflict, affecting economies and societies. The aftermath reshaped borders, led to significant political changes, and set the stage for future global conflicts, including World War II.