Coats of arms came into general use by feudal lords and knights in battle in the 12th century. By the 13th century, arms had spread beyond their initial battlefield use to become a flag or emblem for families in the higher social classes of Europe, inherited from one generation to the next. Exactly who had a right to use arms, by law or social convention, varied to some degree between countries. In the German - speaking regions both the aristocracy and "burghers '' (non-noble free citizens) used arms, while in most of the rest of Europe they were limited to the aristocracy. The use of arms spread to the clergy, to towns as civic identifiers, and to royally chartered organizations such as universities and trading companies. Flags developed from coats of arms, and the arts of vexillology and heraldry are closely related. The coats of arms granted to commercial companies are a major source of the modern logo.
who used to identify themselves through a coat of arms
feudal lords knights families in the higher social classes of Europe clergy towns royally chartered organizations such as universities and trading companies