ヴァルミーの戦い
The song's lyrics reflect the invasion of France by foreign armies (from Prussia and Austria) that was under way when it was written. Strasbourg itself was attacked just a few days later. The invading forces were repulsed from France following their defeat in the Battle of Valmy. As the vast majority of Alsatians did not speak French, a German version ("Auf, Brüder, auf dem Tag entgegen") was published in October 1792 in Colmar.