The Germans are depicted as using M47 Patton tanks that did not go into production until 1951 (setting aside that these are American tanks). The Germans also use Amercian T17 Armored Cars. Both were used by the Italian Army at the time this picture was made.
At the beginning of the scene in which Allejo and his gang of kids are having a shootout from the mountain train and Cazzillo gets shot, around 1h 31min, a piece of glass in front of him reflects the crew.