Battle of Aschaffenburg
Goeben defeats federal troops at Aschaffenburg and secures the Main crossing.
Permanent historical records · Updated 2026-11-03
1866 in Germany — Page 3
Explore 146 historical events and records for Germany in 1866.
Historical records for Germany in 1866
Sorted by month and day. Records with no month are shown last. Showing 40 of 146 unique records.
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July
Army of the Main
Manteuffel replaces Falckenstein and continues operations against the southern German forces.
Armistice Decision
Wilhelm accepts negotiations after military advisers and the Crown Prince support Bismarck's restraint.
Peace Mediation
The Crown Prince helps reconcile Wilhelm with Bismarck's proposal for a moderate settlement.
Battle of Tauberbischofsheim
Goeben defeats the VIII Federal Corps during fighting along the Tauber.
Battle of Gerchsheim
Karl's Bavarian army fails to coordinate effectively with the VIII Federal Corps at Gerchsheim.
Battle of Helmstadt
Manteuffel presses the federal forces eastward after the engagement at Helmstadt.
Battle of Rossbrunn
Karl's Bavarians resist the Prussian advance near Rossbrunn before withdrawing toward Wurzburg.
Preliminary Peace of Nikolsburg
Bismarck secures Austrian consent to Prussian reorganization of Germany north of the Main.
Preliminary Peace of Nikolsburg
The Peace of Prague leaves the southern German states outside the northern confederation.
Programme of the Geneva Congress
Drafts a resolution defining the programme for the International's Geneva Congress.
August
Occupation of Wurzburg
Manteuffel enters Wurzburg as hostilities on the Main front come to an end.
Peace with Württemberg
The annexation law ends Frankfurt's centuries-old status as a Free City.
Peace with Baden
Prussia and Bavaria conclude peace and a secret military convention.
August Alliance
The Hanoverian army capitulates after encirclement despite its tactical victory at Langensalza.
August Alliance
The Peace of Prague authorizes a new federal organization north of the Main.
Constitution
The North German states agree to form a federal state based on the Prussian proposals of June 1866. They agree to have a Parliament elected to discuss a draft constitution
North German Confederation
Prussia and a large number of North and Central German states sign a Bundnis (alliance). The treaty created a military alliance for one year
North German Confederation
The North German states agree to form a federal state based on the Prussian proposals of June 1866. They agree to have a Parliament elected to discuss a draft constitution
North German Confederation
The North German Confederation is the alliance of 22 German states (Augustbundnis)
Unification
The North German Confederation is the alliance of 22 German states (Augustbundnis)
Peace with Bavaria
The Nikolsburg preliminaries stop the Prussian advance and outline the final settlement.
Austrian Silesia
Austria's referral of Holstein to the Federal Diet is treated as a breach of Gastein.
Austrian Silesia
Prussia and Württemberg conclude peace and a secret defensive alliance.
Dissolution of German Confederation
Prussia declares the old Confederation dissolved after the Federal Diet's mobilization vote.
German Unification
The annexation of Nassau consolidates Prussian territory along the Rhine and Main.
Kleindeutschland
The August Alliance binds twenty-two northern German states to Prussian military leadership.
North German Confederation
The treaty ends Austro-Prussian hostilities and confirms the broad Nikolsburg terms.
Peace of Prague
Austria accepts dissolution of the Confederation and Prussian reorganization north of the Main.
Peace of Prague
Bismarck secures a moderate settlement and rejects demands to annex Austrian territory.
Peace of Prague
Prussia and Baden conclude peace and a secret defensive alliance.
Peace of Prague
The settlement protects the separate sovereignty of southern Germany while allowing Prussian alliances.
Peace of Prague
The treaty confirms transfer of Austrian rights in Schleswig and Holstein to Prussia.
Peace of Prague
Wilhelm accepts the final treaty ending the war with Austria on comparatively moderate terms.
Rule of Holstein
Prussian annexation legislation incorporates the Duchy of Nassau.
Rule of Schleswig
The North German Constitution creates a federal state under Prussian leadership.
South German Settlement
Austrian Silesia remains under Habsburg rule because Prussia demands no Austrian territory.
Instructions for Congress Delegates
Prepares instructions for International delegates on major questions to be considered at the Geneva Congress.
September
Annexation Law
Wilhelm promulgates the law incorporating Prussia's defeated northern German opponents.
Annexation of Frankfurt
Prussian annexation legislation incorporates the Kingdom of Hanover.
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.