 Complete the following phrase:  The mobilization of 1870 at the start of the Franco-Prussian War placed him at the head of the VIII Rhineland Army Corps, forming part of the First Army under von Steinmetz. It was his resolute and energetic leading that contributed mainly to the victory at the Spicheren on 6 August, and von Goeben won the only laurels gained on the Prussian right wing at 