At the outset of the war in June, the Prussian armies were gathered along the Prussian border: the Army of the Elbe under Karl Herwarth von Bittenfeld at Torgau, the First Army under Prince Friedrich Karl of Prussia between Senftenberg and Görlitz, and the Second Army under Crown Prince Frederick in Silesia west of Neiße (Nysa). The Austrian army under Ludwig von Benedek was concentrated at Olmütz (Olomouc). The campaign began with Herwath von Bittenfeld's advance to Dresden in the Kingdom of Saxony, where he easily defeated the Saxon army of 23,000 and joined with the First Army.