Shields and coats. It also provides a description of the meaning of the shield, its components and distribution in the flag.With more than 5000 coats of arms, Heraldry is the first application of its kind.Heraldry developed during the Middle Ages in Europe to become a consistent source of identifying people gradually joined by elements of society and the feudal nobility and the Catholic Church for the identification of lineages and members of the hierarchy, being equally adopted by other human groups, unions and associations as well as being taken for the identification of cities, towns and territories.