The Austro-Prussian War, or Seven Weeks War, was fought in 1866 between the German Confederation under the leadership of the Austrian Empire and its German allies on one side and the Kingdom of Prussia with its German allies on the other, that resulted in Prussian dominance over the German states. Prussia had also allied with the Kingdom of Italy, linking this conflict to the Third Independence War of Italian unification. The main campaign of the war occurred in Bohemia. Prussian Chief of General Staff Helmuth von Moltke had planned meticulously for the war. He rapidly mobilised the Prussian army and advanced across the border into Saxony and Bohemia, where the Austrian army was concentrating for an invasion of Silesia. There, the Prussian armies, led nominally by King William I, converged, and the two sides met at the Battle of Kِniggrنtz (Hradec Krلlové) on 3 July. The Prussian Elbe Army advanced on the Austrian left wing, and the First Army on the centre, prematurely; they risked being counter-flanked on their own left. Victory therefore depended on the timely arrival of the Second Army on the left wing. This was achieved through the brilliant work of its Chief of Staff, Leonhard Graf von Blumenthal.