Initially, the attacks by Blucher from the north and Schwarzenberg from the south were unsuccessful, but the arrival of Russian and Swedish troops combined by the defection of Saxon forces led to Napoleon's defeat.
In the aftermath of this battle the losing forces were forced to retreat over a single bridge which was prematurely destroyed, trapping 30,000 troops. Initially, the attacks by Blucher from the north and Schwarzenberg from the south were unsuccessful, but the arrival of Russian and Swedish troops combined by the defection of Saxon forces led to Napoleon's defeat. Breaking French power in Poland and Germany, FTP< what was this October 1813 battle, known as "the battle of the nations"?
In the aftermath of this battle the losing forces were forced to retreat over a single bridge which was prematurely destroyed, trapping 30,000 troops.
Leipzig (prompt on Battle of the Nations)