This was the 2nd Assault Legion of the Blackshirts, commanded by Consul Giovanni Rocca and consisting of the 1st and 2nd CCNN (Blackshirt) battalions from Turin and the 179th CCNN machine gun company from Reggio Emilia. Initially assigned to the Superga Division, in March 1942 the Legion was separated from the division, which was to be transformed into a landing division, and sent to Croazia. It fought against partisan bands, suffering numerous losses, while also being part of the 21st April CCNN Group, which was nothing more than a provisional unit gradually formed from various Blackshirt units without a fixed formation but rotating at random, coordinated by a small Blackshirt command. From the 2nd document appearing in the photo, however, it would appear that the 1st battalion of the 2nd Legion or at least its 2nd company had passed to the Germans in October 1943 (therefore after the armistice) and was under the control of the Fascist Militia of the Province of Ljubljana.
All the best
Maurizio