During World War I the regiment consisted of 10 battalions and saw heavy fighting in the Alps against Austria’s Kaiserjäger and Germany’s Alpenkorps. The battalions of the regiment in these days were (pre-war raised units in bold, followed by their first and second line reserve battalions): * File:Nappina bianca.png Tolmezzo, Val Tagliamento, Monte Arvenis * File:Nappina rossa.png Gemona, Val Fella, Monte Canin * File:Nappina verde.png Cividale, Val Natisone, Monte Matajur, Monte Nero