Charles then became a "Feldmarschall" (Field Marshal) in the Austro-Hungarian Army. In the spring of 1916, in connection with the offensive against Italy, he was entrusted with the command of the XX. Corps, whose affections the heir-presumptive to the throne won by his affability and friendliness. The offensive, after a successful start, soon came to a standstill. Shortly afterwards, Charles went to the eastern front as commander of an army operating against the Russians and Romanians.