- Alexis’ Les Uniformes pendant la campagne des Cent Jours – Belgique 1815.
- John O’Brien’s Uniforms of the Napoleonic Wars, which consists of uploads of Historex colour plates.
- The Napoleon Series by Robert Burnham et al. Exceptionally comprehensive but not particularly accessible. In fact, some linked articles no longer exist.
- Napoleon, His Army and Enemies by Zbynio Olszewski et al. Even though the site hasn’t been updated in a few years, it’s still one of the most comprehensive and most accessible online sources on the Napoleonic Wars.