Found in a recently-published collection of personal narratives from the Napoleonic Wars...
Apparently the vernacular name for the city of Vienna ("Wien") doubled as a mantra of resistance for residents of the occupied city.
"Was Ist das Ende Napoleons?
Wien Ist das Ende Napoleons."
(Translation: "What is the end of Napoleon? Vienna is the end of Napoleon!")
Quite similar to how Giuseppe Verdi's name was co-opted during Italian unification. According to the historical claim, the slogan "Viva VERDI" stood for "Viva Vittorio Emanuele Re D'Italia" ("Long live Victor Emmanuel, King of Italy").