To distinguish the nobles fighting in battles and tournaments to their combatants and followers. Since they all wore roughly the same outfit and had their faces covered by visors, they would otherwise be hard to tell apart.
To recognize the warriors when in full armour. They could not tell who each person was so they made them to tell them apart. As time went on these decorations were repeated on the surcoat (a sleeveless garment that
was worn over armor)-therefore the name, coat of arms.
Coat of Arms of Connecticut was created in 1931.
Coat of arms of Nunavut was created in 1999.
Coat of arms of Belgrade was created in 1932.
Coat of arms of Sydney was created in 1996.
Coat of arms of the Gambia was created in 1964.
Coat of arms of Montserrat was created in 1909.
Coat of arms of Bratislava was created in 1436.
Coat of arms of Copenhagen was created in 1661.
Coat of arms of Edmonton was created in 1994.
Coat of Arms of Mississippi was created in 1894.
Coat of arms of Toronto was created in 1998.
Coat of arms of Bucharest was created in 1994.