I hadn’t realised there was a photograph of Wellington: a daguerreotype by Antoine Claudet from 1844, eight years before his death. Click for better resolution.
Below, photographs of Napoleon’s soldiers taken in the third quarter of the century. Has to be seen in full screen. The pride and élan of the earlier days is still in their faces. Some of the uniforms are Second Empire, ie not of the original period. I can’t tell you about the music.
The pictures follow the creation in 1857 of the St Helena Medal by Napoleon III. Its designer was Albert Désiré Barre. The obverse bears the effigy of Napoleon I, surrounded by the inscription NAPOLEON I EMPEREUR. The reverse has A SES COMPAGNONS DE GLOIRE SA DERNIÈRE PENSÉE STE. HÉLÈNE 5 MAI 1821, surrounded by CAMPAGNES DE 1792 A 1815. Accents as shown.
I once saw a man, Bertrand Russell, who had heard a first-hand account of Napoleon.