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Prussian War
Prussian War Montage (No Napoleon)
Date 22 April 1856 – 15 August 1857
Location Holy Roman Empire, France, Europe
Result Treaty of Augsburg
Flag of the Habsburg Monarchy Austrian Empire and allies

Flag of France France and allies

Flag of Prussia (1892-1918) Prussia and allies

Supported by:
Flag of the Kingdom of Sardinia Sardinia

See below for influenced states

The Prussian War (German: Französischen Krieg, French: Guerre prussienne), also known as the Prussian War of Aggression, was a war fought in 1856 to 1857 within the Holy Roman Empire, concerning influence over the German states. Emperor William I of Prussia had declared war on Austria and France, in an effort to unify the German states under the Prussian crown.


French Revolution

Revolutions of 1836

Prussian Imperialism


Alliances of the Prussian War, 1856
Influence in the HRE, 1856 (No Napoleon)
Flag of Prussia (1892-1918) Kingdom of Prussia-
Flag of the Habsburg Monarchy Austrian Empire Flag of France French Republic

Flag of the Kingdom of Sardinia Sardinia
Flag of Hanover (1692) Electorate of Hanover
Civil flag of Oldenburg Duchy of Oldenburg
Flag of Electoral Saxony Electorate of Saxony
Flag of Sweden Swedish Pomerania
VlagSGA Saxe-Gotha
Armoiries Saxe Saxe-Coburg-Saalfeld

Flag of Bavaria (lozengy) Electorate of Bavaria
Flag Duchy of Saxe-Meiningen
Flagge Herzogtum Sachsen-Coburg-Gotha (1826-1911) Saxe-Hildburghausen
Black St George's Cross Fulda
Banner of the Electorate of Mainz Mainz
Flagge Fürstentümer Schwarzburg Schwarzburg-Sondershausen
Wappen Bistum Bamberg Bamberg-Bayreuth

Flag of the Prince-Bishopric of Münster Bishopric of Münster
Flag of Zaragoza (province) Bishopric of Paderborn
Banner of Baden (3^2) Electorate of Baden
Flag of The Electoral Palatinate (1604) Electoral Palatinate
Wuerttemberg Banner Electorate of Württemberg
Flag of Hesse Hesse-Kassel
Flag of the Kingdom of Westphalia Duchy of Westphalia
Bergischer Löwe Duchy of Berg
Wapen Nassauw County of Nassau
Wappen Bistum Osnabrück Bishopric of Osnabrück
Flag of Italy French client states

Course of the war