Definition
The Battle of Tertry, fought in 687 AD, was a decisive conflict between Pepin of Herstal, the Mayor of the Palace of Austrasia, and the Neustrian forces. Pepin's victory secured his control over the Frankish kingdoms. It marked a turning point in the transition from the Merovingian to the Carolingian dynasty. Think of it as a game-changing event in early medieval Europe. The Battle of Tertry fundamentally altered the power structure. It set the stage for the Carolingian Empire.