Plan of Attack on Caracol, 1803

I first saw this map in 2008 when I took my first research trip to Paris. It is at the Richelieu branch of the Bibliotheque Nationale (you can also see it online at Gallica). This is one of those sources that doesn’t really fit with my research project, but I really like it anyway. The watercolor painting is just beautiful! Does anyone know about this battle? Or if it even happened (the painting might be a hypothetical!).