The Battle of Tertry is an important engagement in Merovingian Gaul between the forces of Austrasia on one side and those of Neustria and Burgundy on the other.
It takes place in 687 at Tertry, Somme.
“Let us study things that are no more. It is necessary to know them, if only to avoid them. The counterfeits of the past assume false names, and gladly call themselves the future. Let us inform ourselves of the trap. Let us be on our guard. The past has a visage, superstition, and a mask, hypocrisy. Let us denounce the visage and let us tear off the mask."