- 480 BC 19 Aug Spartan soldiers make an heroic last stand against the Persians at the pass at Thermopylae.
- 1745 19 Aug Bonnie Prince Charlie raises his standard at Glenfinnan, Scotland, igniting the second Jacobite rebellion.
- 1942 19 Aug An Allied raid on the German-held port of Dieppe, France, ends in complete failure and heavy losses.