Austro-Prussian War
The pretext for the conflict was found in the dispute between Prussia and Austria over the administration of Schleswig-Holstein, which the two of them had conquered from Denmark and agreed to jointly occupy at the end of the Second Schleswig War in 1864. When Austria brought the dispute before the German Diet and also decided to convene the Diet of Holstein, Prussia declared that the Gastein Convention had thereby been nullified and invaded Holstein. When the German Diet responded by voting for a partial mobilization against Prussia, Bismarck claimed that the German Confederation was ended. Crown Prince Frederick "was the only member of the Prussian Crown Council to uphold the rights of the Duke of Augustenburg and oppose the idea of a war with Austria which he described as "fratricide"". Although he supported unification and the restoration of the medieval empire, "Fritz could not accept that war was the right way to unite Germany."
Charles VII, Holy Roman Emperor
During the War of the Austrian Succession Charles Albert invaded Upper Austria in 1741 and planned to conquer Vienna, but his allied French troops under the Duc de Belle-Isle were redirected to Bohemia instead and Prague was conquered in November 1741. So Charles Albert was crowned King of Bohemia in Prague (19 December 1741) when the Habsburgs were not yet defeated. He was unanimously elected "King of the Romans" on 24 January 1742, also with the vote of George II, and became Holy Roman Emperor upon his coronation on 12 February 1742. His brother Klemens August of Bavaria, archbishop and elector ("Kurfürst") of Cologne, who generally sided with the Austria Habsburg-Lorraine faction in the disputes over the Habsburg succession, cast his vote for him and personally crowned him emperor at Frankfurt. Charles VII was the second Wittelsbach Emperor after Louis IV and the first Wittelsbach King of the Romans since the reign of Rupert of Germany.