I think the things are important to get an standalone Italian army
small arms
wz35 ATR
Tanks
CV 35 \
M11/39 > for 1940/41 Maps
Autoblinda Lancia I.Z. /
Semovente 75/18
AB 41
Jeeps/Commandocars
Fiat Model AS 37 or
Fiat Model 42
Artillery
Mortaio da 81/14 Mod. 35 mortar
Cannone da 105/28
90mm AA
20mm AA Breda
maybe a fieldgun
Cannone da 75/32
Airplanes
Fiat Cr 42 as Scoutplane, fighter, light bomber
Mc 202
Ju 87