 Complete the following phrase:  The 1st Army was formed in 1914 as part of Austria-Hungarys mobilization following its declaration of war on Serbia and Russia, carrying out the prewar plans for the formation of six field armies. Just as all Austro-Hungarian field armies, it consisted of a headquarters and several corps, along with some unattached units. The 1st Army was put under the command of General of the Cavalry Viktor Dankl von Krasnik and was composed of the I, V, and X Corps, originating from Kraków, Presburg and Przemyśl, respectively. Under his command, the units of the 1st Army scored the first Austro-Hungarian victory of World War I during the 