A more thorough explanation:

VIS ARMATA

Vis armata is a Latin term that means "armed force." It refers to the use of weapons to exert force.

For example, in medieval times, knights would use their swords and armor to exert vis armata on their enemies during battles. Similarly, in modern times, soldiers use guns and other weapons to exert vis armata on their enemies during wars.

Vis armata is different from vis inermis, which refers to force exerted without weapons.