From www.ansa.it:
“A lost fresco portraying Napoleon's triumph at the Battle of Austerlitz has been rediscovered in Venice. The fresco by Venetian artist Giovanni Carlo Bevilacqua (1775-1849) was one of a series of celebratory works commissioned in Venice after the French military genius's victory over the mighty combined forces of Austria and Russia in 1805…”
Click here or here for the complete story (external links) and here for an image of the fresco (external link: image is fourth from the top).