A family tree is mostly a collection of birth, marriage and death information; this is possible when these records are available and when we know the essential information to start a research in the Italian local sources such as town halls and parish churches.
If we want to expand our family history with facts and additional information, or if we need help to find some missing data (i.e. the exact town of birth), military and conscription records can be very helpful.
What if my Ancestor was born in a town that is no longer part of Italy? Due to the many changes in the boundaries between Italy and other nations over the course of history and the ever changing laws of citizenship, the complexity requires you ask the Italian Consulate if you qualify.
If your Italian-born Ancestor was a minor when he or she left Italy, you cannot use him or her as your proof of eligibility.