The Italian army crosses the Mincio into Austrian territory.
Austrian forces attack Prussians on the high ground at Vysokov near Skalice. In a confused and bloody encounter, they manage to achieve some objectives but are ultimately beaten back and defeated by the Prussians.
At about the same time, Austrian units attack Prussians near Trautenau (Trutnov). After initial Prussian successes in the morning, a larger Austrian force resumes the attack in the afternoon. They clear the high ground of Prussians, who retreat and leave the Austrians in possession of the field. But the Austrians are forced to withdraw for tactical reasons and leave casualties at a rate four times that of the Prussians.
Prussian forces defeat Austrians and Saxons at Münchengrätz (Mnichovo Hradiste), 60 km northeast of Prague, but the main Austrian army escapes. Meanwhile, Prussians defeat the Austrians at Burkersdorf and Rudersdorf (Rubinovice), south of Trautenau (Trutnov).
In a furious engagement near the same ground as Vysokov yesterday, Prussians send Austrians into retreat at Skalice, leaving thousands of casualties.
King Georg V of Hannover surrenders his army to the Prussians at Nordhausen in northern Thuringia.
The Austrian army crosses the Mincio into Italian territory, but only to forage.
In hopes of gaining an ally against Prussia, Austria fulfills its promise of 9 June and cedes Venetia to France.
Italian forces capture Udine, 100 km northeast of Venice.