Adventures of an Aide-de-Camp follow the exploits of Lieutenant Claude Dundas, personal assistant to Sir John Stewart, of his Britannic Majesty's 62nd Regiment, in their campaign against Napoleon's forces in Calabria. It tells the story of Neapolitan campaign, an expedition set on foot to force the French out from South Italy, depicting romantic adventures of young aide-de-camp all the way to the siege of Scylla and the affair of matchless bravery between struggling British and the besieging French.