Italian Co-belligerent Army

The Italian Co-belligerent Army (Italian: Esercito Cobelligerante Italiano), or Army of the South (Esercito del Sud), were names applied to various units of the now former Royal Italian Army during the period when they fought alongside the Allies during the Italian Campaign and civil war of World War II from October 1943 onwards. During the same period, the pro-allied Italian Royal Navy and Italian Royal Air Force were known as the Italian Co-belligerent Navy and Italian Co-belligerent Air Force respectively.

Source: Wikipedia — Italian Co-belligerent Army (CC BY-SA 4.0)