[Freiherr]. Austro-Hungarian general, born at Hermannstadt, Transylvania, and served in the infantry and on the general staff. At the outbreak of the World War he was the chief of a section in the Ministry of War, but hurried to the Russian front, where he commanded first the 15th Division, and later the VI. Army Corps. He shared the success of the battle of Limanowa-Lapanow in December 1914, which definitely stopped the Russian offensive, with Col.-Gen. Freiherr von Roth (b. at Trent in 18??9), In the spring and summer campaign of 1915 Arz and his corps acted with Mackensen’s German army, and fought with special success in the neighbourhood of Przemysl and in the further course of the campaign captured the fortress of Brest-Litovsk. Appointed to the command of the 1st Army in the summer of 1916, he had as a Transylvanian to defend that country against the Rumanians, whom he, in conjunction with Falkenhayn’s German troops, drove back into Wallachia. After the retirement of Conrad von Hötzendorf, Arz was appointed by the Emperor Charles chief of the general staff of the Austro-Hungarian armies, the department of operations being conducted under his direction by the able Maj.-Gen. Alfred, Freiherr von Waldstätten (b. at Vienna in 1872).
