When military activities began in May 1915 in the Soča valley, the Austro-Hungarian Army moved to the left bank of the Soča (Isonzo) and fortified their positions on the summits of the Krn range. Mt. Krn was defended by the Honvéds (members of the Royal Hungarian Landwehr troops in Austria-Hungary) who were unskilled in mountain warfare. Thus on 16 June 1915, two companies of the alpini from the Battalion Exilles managed to conquer Mt. Krn in a surprise attack. In memory of this event, the Italians erected a monument at that place to Second Lieutenant Alberto Picco who was killed during the conquest of this peak. Nowadays, a mountain resort stands on the site.
During the war, Mt. Krn was one of the most important fortified mountains in the Soča Region. As the highest peak in the massif, it was a very good observation and strategic point. The neighbouring Mt. Batognica was likewise one of the bloodiest mountains.
Access to Mt. Krn from the village Krn:
Kuhinja mountain pasture–Mt. Krn 3.5 hrs
Kuhinja mountain pasture–Lužnica–Mt. Krn 5.5 hrs
Drežnica–Mt. Krn (southern route) 5 hrs
Access from Lepena:
Lepena (Dom Klementa Juga)–Mt. Krn 5–6 hrs
Lepena (Dom Klementa Juga)–Lake Krn 2.5–3 hrs