 On 4 October, the Austro-Hungarian 1st Army transferred von Morgen's I Corps, with its two divisions, to von Falkenhayn's 9th Army.Austria-Hungary was, on paper, heavily involved in this battle, but in actuality its own forces did nothing.Its 1st Army controlled von Morgen's I Reserve Corps, which comprised both a German infantry division (the 89th) and an Austro-Hungarian infantry division (the 71st).