The Great War has shaped many 20^th century practices and norms.

In 1914 the firepower of modern weaponry produced a massacre. To limit losses, the warring parties dug themselves into trenches. The French army was forced to innovate.

The first wave of globalization in the 20^th century triggered deep upheaval of the organization of power and an overall depreciation of European nations.

The increasing militarism prior to the Great War had its roots in national beliefs and ideologies constructed during the 19^th century in European countries.

Germany’s responsibility in the two global conflicts reflects, among other things, the German military’s desire to free itself from political control and the depth to which the Wehrmacht was immersed into Nazi ideology and a Nazi state whose orders it never really contested.

The First World War had tragic consequences for the Middle-East. It led to the partitioning of the Ottoman Empire and the balkanization of the region. 

For the Turks, the Treaty of Sèvres symbolizes the liquidation of the Empire and the carving up of Turkey by outside forces.

The First World War gave rise to the emergence of the discipline of international relations, but it was the Second World War and the Cold War that fostered its development.