After a series of defeats, Napoleon concentrates his army for the major battle of Halle defeats the Russians and drives them back towards Leipzig. He moves his army to the west bank of the river Saale and declares a victory.
He has secured the flank of his Second French Army who are facing Blucher at Madgebug, but has failed to turn the Prussian flank.
The campaign ran for 6 weeks and covered the period 15 May to 13 June 1815.
You can read about it by clicking 1813 Halle Campaign on the right.