A more thorough explanation:

SERVITIUM SCUTI

Servitium scuti is a Latin term that means "service of the shield". It refers to the knight-service in medieval times.

During the medieval period, knights were required to provide servitium scuti to their lords. This meant that they had to serve in battle and protect their lord with their shield.

For example, if a lord went to war, his knights would accompany him and fight alongside him. They would use their shields to protect their lord from enemy attacks.

Another example of servitium scuti was when a knight was required to provide military service to his lord for a certain number of days each year. This was known as "castle guard". During this time, the knight would be responsible for protecting the castle and its inhabitants.

These examples illustrate how servitium scuti was an important part of the feudal system in medieval times. Knights were expected to provide military service to their lords in exchange for land and protection.