Hi, congratulations for the idea and the realization, italian subjects are rare and I'm happy to see them made.
ICM figurines are really nice and as you wrote they depict Italian soldiers in the first months of the war (Italy entered the war on may 24th, 1915) because they are not equipped with the Adrian helmet [Adrian's first batches, of French production (with Republique friezes and bleu horizon paint) were supplied to the troops in the fall of 1915 while the Italian Adrian, Mod. 16, was produced starting in the spring of 1916], they did not have the puttee supplied from november 1916 and boots of the first type.
In this plate an italian soldier in the first months of war
Here an italian soldier at the end of the war (has a British-made gas mask, mollettiere bands over the socks, haversack instead of backpack, a new model canteen and leather-colored boots instead of the previous black ones)
This makes the Villar Perosa machine gun (delivered to the wards from April 1916) incompatible with the scene. I also have some doubts about the Austrian ironclad (if I am not mistaken, the first use on the Italian front would date back to the first AU gas attack on Italian front against Monte San Michele on June 30th, 1916).
Hope I was helpful, have fun and happy modelling
Vittorio