Napoleon III had tried to secure territorial concessions from both sides before and after the Austro-Prussian War, but despite his role as mediator during the peace negotiations, he ended up with nothing. He then hoped that Austria would join in a war of revenge and that its former allies—particularly the southern German states of Baden, Württemberg, and Bavaria—would join in the cause. This hope would prove futile since the 1866 treaty came into effect and united all German states militarily—if not happily—to fight against France. Instead of a war of revenge against Prussia, supported by various German allies, France engaged in a war against all of the German states without any allies of its own. The reorganization of the military by von Roon and the operational strategy of Moltke combined against France to great effect. The speed of Prussian mobilization astonished the French, and the Prussian ability to concentrate power at specific points—reminiscent of Napoleon I's strategies seventy years earlier—overwhelmed French mobilization. Utilizing their efficiently laid rail grid, Prussian troops were delivered to battle areas rested and prepared to fight, whereas French troops had to march for considerable distances to reach combat zones. After a number of battles, notably Spicheren, Wörth, Mars la Tour, and Gravelotte, the Prussians defeated the main French armies and advanced on the primary city of Metz and the French capital of Paris. They captured Napoleon III and took an entire army as prisoners at Sedan on 1 September 1870.