After the Italian occupation of Ljubljana in April 1941, the occupier anticipated the new state structures will assume power relatively peacefully. But despite a strong military presence, the capital of the erstwhile Drava Banovina now became a hotbed of resistance that could not be contained. Thus, in January 1942 the Italian army under General Mario Robotti commenced to physically separate Ljubljana from its hinterland with barbed wire. To speed things up, on 18 February fresh troops arrived to aid in the first stage of installing a 32 km long barbed wire fence around the city. Five days later, in the morning of 23 February, the main road connections to the hinterland were cut off with wire obstacles, and armed military units were positioned along the wired perimeter. The wire ring around Ljubljana was closed at 2 pm and at 3 pm residents’ movement in and out of the city was officially restricted by relevant decrees.
In the following days power lines were set up to provide light along the wire, and checkpoints, machine gun nests and defence bunkers had been fortified. But this wasn’t enough. Dissatisfied with the progress during his visit to Ljubljana in July 1942, Mario Roatta, commander of the Italian Second Army, demanded that by 15 September 1942 a new defence belt of fortified blocks at entry points into the city, a fortified artillery post plus a series of fortified machine gun nests should be constructed, in addition to a 26 km long patrol path and a new access road over Mt Golovec east of the city centre. The works were carried out by Italian civilian companies according to the plans of the XI Army Corps.
Meanwhile, by August 1941 an interior defence strip was set up to separate the suburbs of Vič, Šiška and Moste. A total of 34 guardhouses were put up at passage points, and road movements were restricted by Czech Hedgehogs . Thus, Ljubljana became the largest of the hitherto recorded six wire-encircled towns in the occupied Province of Ljubljana, the rest being Črnomelj, Idrija, Logatec, Metlika and Novo mesto.