When Yassir enters the village before the final battle, he is carrying a Thompson M1A1 sub-machine gun, then between shots it changes back and fourth to a M1928 Thompson sub-machine gun.
When Abdelkader and Yassir carry the bodies of killed soldiers in a cart to bury them, Yassir rests his gun against the wheel. In the next shot, the gun falls to the ground from a completely different position.
In the scene when the African soldiers raise the French tricolor over the Italian mountain top, the flag they use is polyester (i.e. a contemporary flag). World War II troops would have used a cotton flag.
Military trucks used in the Italian front look like US M35 Vietnam era vehicles, WWII US trucks look very different.
At one point, a soldier refers to North Africans of European descent as "pieds-noirs." However, the term did not start to get used in that sense until the mid-1950's.