 Henry invaded Lotharingia and forced Bishop Herman of Metz into exile, but Berthold of Zähringen and Welf of Bavaria inflicted defeats on his Swabian and Franconian supporters.Rudolf of Rheinfelden hurried to Franconia and met Henry and his army of 12,000 Franconian peasants at Mellrichstadt on 7 August.The Battle of Mellrichstadt proved indecisive.