sentences:  Arz was to remain in charge of the 1st Army until February 1917, after major operations in Romania ended, with help from Falkenhayn 9th German Army and from the German Army of the Danube under Mackensen.Karl I of Austria succeeded Franz Joseph as Emperor on 21 November 1916, bringing with him a wave of change across the upper echelons of the government and military command.One casualty of these changes was Conrad, with Karl reported as "not wanting a genius to command his armies", but following on from the experience of the supremely gifted but often unsuccessful Conrad, rather someone who was just capable.