I want to know the answer to the following question:
Which general opened the battle with artillery from the 25th Infantry Division?
All the background I'm provided with is that "By 14:30, General Steinmetz, the commander of the First Army, unilaterally launched his VIII Corps across the Mance Ravine in which the Prussian infantry were soon pinned down by murderous rifle and mitrailleuse fire from the French positions.". Is that enough to answer the question?