 Complete the following phrase:  During World War I the regiment raised an additional twelve bridge engineer and three lagunari companies. The regiments companies were employed repeatedly during the first eleven battles on the Isonzo river. After the Twelfth Battle of the Isonzo the regiments companies built emergency bridges over the Torre and Tagliamento rivers to allow the Third Army to escape. During the battles along the Piave river the engineers helped the Italian Army cross the river during the decisive 