Following the capture by the Prussians of French Emperor Napoleon the Third at the battle of Sedan. A new French Third Republic was declared in Paris, with new left wing government minister. The Prussian Army marches on Paris and besieges it. However there is a large French Army Garrison and good defensive posiitons protecting the French capital. So the Prussian Army do not attack into Paris but instead to make Paris suffer from hunger. French Army attempts to break the siege are unsuccessful.