The thirteen stars, arrows and bars on the shield all represent the thirteen original colonies.
He shielded me with his body.
A shield will not protect you from an attack from behind.
Can you please shield me?
He used the man's body as a shield.
The fact that people still cling to the belief that the State is required to resolve disputes is amazing, since modern courts are out of the reach of all but the most wealthy and patient, and are primarily used to shield the powerful from competition