The logo or picture on a knight's shield is called a coat of arms. It typically includes symbols and colors that represent the knight's identity, family, or allegiance.
They are the colours and design of the lord that soldier or knight fights for.
Shield
It depends on what shield you are referring to . Shield could mean a firewall or an antivirus like mcafee
"On [a/the] shield."
The NHL is a league encompassing 30 teams. The NHL shield is simply black and white and each individual team has their own team colors.
You are describing the Nazi Party armband or other emblem. Those colors were the Germany national colors. The typical infantryman's helmet had the National Eagle painted on one side and a shield with the National colors on the other side. Only the SS and Military Police had a shield with the swastika emblem. So the 3 colors, red white & black, are the national colors which were used by the Nazis to make their emblem.
green bean
to guard
what do the colors mean in the nba cares logo
If you mean the design of the shield, it was updated with the times. The early armies used roundish or oval shields, then changed to the rectangular shield, which in turn gave way to the rectangular curved shield. With this curved shield a man could step into his shield to use it for pushing and it also protected his sides to an extent. If you mean any design on the outside of the shield, it was the emblem of the legion, if it was there at all. Most Roman shields are believed to have been unadorned, despite what Hollywood tells you.
=== === There are several shield volcanoes around the world. You could mean any of them