 Complete the following phrase:  Bavarian mountain warfare expert von Dellmensingen was sent to assess the Austro-Hungarian defenses in Italy, which he found poor. Then he scouted for a site from which an attack could be mounted against the Italians. Hindenburg created a new Fourteenth Army with ten Austro-Hungarian and seven German divisions and enough airplanes to control the air, commanded by Otto von Below. The attackers slipped undetected into the mountains opposite to the opening of the Soča valley. The 