Wellington's Victory, or the Battle of Vitoria (also called the Battle Symphony; in German: Wellingtons Sieg oder die Schlacht bei Vittoria), Op. 91,[1] is a 15-minute-long orchestral work composed by Ludwig van Beethoven to commemorate the Marquess (later Duke) of Wellington's victory over Joseph Bonaparte at the Battle of Vitoria in Spain on 21 June 1813 and the German campaign of 1813 in Germany thus ending the rule of Bonaparte's Confederation of the Rhine and the birth of the German Confederation. It is known sometimes as "The Battle Symphony" or "The Battle of Vitoria", and was dedicated to the Prince Regent, later King George IV. Composition stretched from August to first week of October 1813, and the piece proved to be a substantial moneymaker for Beethoven.
The autograph manuscript of the work is preserved in the Berlin State Library.