On May 15, 1916, the Austrian army staged an attack from the Trentino, unaided by the German army, whose command had advised against such a move. Several divisions were withdrawn from the Russian front to achieve necessary troop strength. The offensive was of limited tactical success. Austrians penetrated twelve miles into Italian territory, inflicting heavy casualties on the Italians, but fell short of their strategic and political goals. This inconclusive attack weakened the eastern front, which enabled the Russian Army to overrun Austrian positions in Galicia and threaten the heart of the Habsburg Empire