The Battle of Grathe Heath is fought in 1157 between the Danish armies of Valdemar I and his rival for the Danish throne, Sweyn III.
Valdemar's forces win the battle, and Sweyn III is slain while attempting to flee.
"Human history becomes more and more a race between education and catastrophe... Yet, clumsily or smoothly, the world, it seems, progresses and will progress."
― H.G. Wells, The Outline of History, Vol 2 (1920)