Under Bismarck’s leadership, domestic policies sought to consolidate German unity and reduce opposition to the new state while foreign policy focused on maintaining stability in Europe and preventing conflicts that could threaten the new empire, by establishing a system of alliances that isolated France.

The German forces reached the outskirts of the French capital on 15 September and General Helmuth von Moltke, the commander of the Prussian army, gave the order to begin surrounding the city.