On August 22, 1138, the Battle of the Standard took place in Northallerton, England, a significant conflict between the English and Scottish forces, notable for its impact on medieval Anglo-Scottish relations.

On August 23, 1939, the Molotov-Ribbentrop Pact was signed, a non-aggression agreement between Nazi Germany and the Soviet Union, which included a secret protocol dividing Eastern Europe into spheres of influence, significantly impacting the outbreak of World War II.

On August 24, 1572, in France, the St. Bartholomew's Day massacre began, where thousands of Huguenots were killed, significantly impacting religious conflicts in Europe.

On August 25, 1944, Paris was liberated from German occupation during World War II, marking a significant turning point in the war and boosting Allied morale.

On August 26, 1789, the National Assembly of France approved the Declaration of the Rights of Man and of the Citizen, a foundational document of the French Revolution that proclaimed liberty, equality, and fraternity, inspiring democratic movements worldwide.

On August 27, 1791, in Pillnitz, the Declaration of Pillnitz was issued by Austria and Prussia, signaling their intent to intervene in the French Revolution, which heightened tensions leading to the French Revolutionary Wars.

On August 28, 1850, in Weimar, Germany, the opera "Lohengrin" by Richard Wagner premiered, marking a significant moment in European musical history due to its innovative composition and influence on future opera.