An important update that fixes some weirdness with weapon ranges not being set properly:
Changelog for 5.1.3
ADD: Italian AI units: AB 40, AB 41, 37/45 AT Gun, 65/17 Mountain Gun, 75/27 Gun, 100/17 Gun, Fiat 626, Ju 87 Picchiatello
CNG: "Direct Fire" command now available to the Commander/Gunner position as well
FIX: Bug where some weapon stats were not being set properly upon unit spawn