Napoleon's forces were characterized by their iconic "Imperial Blue" coats, though supply shortages meant many line infantry units wore faded or more subdued versions during the 100 Days.
Wellington’s army was a multinational force with a patchwork of uniform styles. Uniforms of Waterloo in colour, 16-18 June 1815
The uniforms seen during the Waterloo Campaign (June 16–18, 1815) were far more varied than the classic "red versus blue" image often suggests. While official regulations dictated certain looks, many units appeared on the field in campaign-worn gear, captured equipment, or emergency militia attire. While official regulations dictated certain looks
Included the Brunswickers (the "Death's Head" corps) in striking all-black uniforms with silver skull-and-crossbones badges, and the Dutch-Belgian troops who often wore dark blue or green coats. Uniforms of Waterloo in Color | PDF - Scribd like the Old Guard Grenadiers
The most prestigious units, like the Old Guard Grenadiers, were distinguished by their tall bearskin caps featuring a brass plate with the Imperial eagle and a red plume.