Prussian leaders, especially Otto von Bismarck, the chancellor and advisor to Prussia’s king, believed Prussia could be a united and respected power, but only without the traditional Austrian dominance. At the time, the Austrian empire was a collection of ethnically diverse peoples and had been dominated by a socio-political conservatism that sought to keep the empire ruled in Hapsburg tradition.
After Prussia was victorious in the Austro-Prussian War, Bismarck played a waiting game where the unification of Germany was concerned, as the joining of the southern states - initially resistant to Prussian rule, friendly with Austria, and bent on independence - would have to be overcome. What was needed was “a clear case of French aggression” toward either Prussia or the southern states. Not only would such a move by Emperor Napoleon III trigger the terms of the treaty between the German states, but it would keep the remaining world powers out of the conflict. It would be a dispute over the throne of Spain that would cause Napoleon III to act.
If trench warfare was an inevitability during the war, it is only because the events leading up to the First Battle of the Marne were quite different. The armies at the beginning of the war moved quickly through the land, but the First Battle of the Marne devolved into a bloody pitched battle that led to the construction of trenches after the Germans retreated, blocked in their pursuit of Paris. When the aftermath disintegrated into a war between trenches, some Germans thought they had the upper hand since they were occupying French territory, but with fewer soldiers than the combined Allied nations and fewer resources and supplies, it was possibly only a matter of time before they were ultimately defeated. The commander of the German armies, General Helmuth von Moltke, allegedly said to Kaiser Wilhelm II immediately after the First Battle of the Marne, "Your Majesty, we have lost the war."
