Battle of Leipzig ("Battle of the Nations"), 1813
This was one of, if not, the largest of the Napoleonic battles.
Schwarzenberg's original plan called for a secondary attack on the bridge between Leipzig and Lindenau, and a main attack astride the Pleisse River. According to his plan Blucher and Gyulai would attack Lindenau, while Merveldt, Hessen-Homburg and the Prussian Guard would advance between the Pleisse and the Elster, the rest of the troops along the Pleisse's eastern bank. Schwarzenberg's plan had the unusual virtue of being so bad that everyone protested. Tsar Alexander, "surprised beyond measure at this unanimity among his generals", intervened, forcing Schwarzenberg to develop a new plan that was largely designed to let everyone do as they pleased. Blucher's axis of advance was shifted northward to the Halle road, the Russian and Prussian guards and the Russian heavy cavalry would be amassed at Rotha in general reserve. The Austrian grenadiers and cuirassiers would advance between the rivers. (Esposito & Elting - "Military History and Atlas of the Napoleonic wars."
On map: Battle of the Nations 16-19th October 1813
Deployment of troops at Leipzig.