The « light horse regiment of the duke of Berg » was raised by decree of May 21 1807 around a nucleus of German speaking volunteers, officers and NCOs, from various French cavalry regiments posted in France or Italy. It used the classical French establishment of one depot squadron and four war squadrons of 87 horsemen each. The 1st company was entitled as « Body Guard » of Murat.
In the spring of 1808, the Body Guard company was sent in Spain. When Murat was promoted as king of Naples, the company was at first administratively attached to the imperial Guard cavalry and finally disbanded on January 11 1809 his strength being transferred to the imperial Guard horse grenadiers and chasseurs or to the newly raised Berg chasseurs.
In fact the new governor of the duchy decided, by decree of August 29 1808 to raise a « regiment of mounted chasseurs of Berg » using the cadres of the companies that stayed in the duchy. The new regiment was posted to the army of Germany during the Austrian campaign.
The decree of December 17 1809 renamed the chasseurs as « regiment of lancers of Berg » and the first two squadrons were sent to the Peninsula in the spring of 1810.
In 1811, regiment is augmented to six squadrons, three in Spain and three in Germany.
Following the decree of March 4 1812, the latter are transferred to a new regiment, the 2nd lancers of Berg, the former so becoming the 1st regiment of the branch. Finally both were renamed « regiments of light horses lancers of Berg ». The 2nd one takes part to the Russian campaign.
In 1813, the few horsemen that escaped Russia were amalgamated with the ones called back from Spain to raise a « lancers of Berg brigade » that fight at Dresden and Leipzig battles.
The Prussian rulers used the few strength they found in the duchy to raise a « hussars of Berg regiment », of four hussars and one voluntary jaegers squadrons. On April 20 1815, the regiment was transferred to the Prussian army as 11th hussars regiment and as such took part in the Belgium campaign.

Light horses 1807-1808

Light horses

• Polish style coat (kurtka) in white cloth. Light crimson collar. White fringed epaulets. Light crimson lapels. Light crimson pointed cuffs. Light crimson turnbacks and vertical pockets simulated by a light crimson piping. White metal buttons.
  In field dress, light grey single breasted coat with light crimson collar and cuffs and same ornaments.
• Light crimson polish style trousers with double white side band. Black light boots.
  In field dress, grey cloth overalls with leather inserts and light crimson side band.
• Czapska with light crimson cloth top piped and laced white and black leather crown bearing a brass sunrays plate with silvered centre bearing a brass crowned J cipher. White plume over white cockade with light crimson centre. White cords and flounders. Black leather peak with brass strengthening and brass chinscales.
• White leatherwork. Light cavalry sabre with brass three bars hilt and iron sheath, white sabre strap.
• Light cavalry harness, Hungarian saddle with light crimson saddle cloth laced white bearing a white crowned J cipher in rear corners. Cylindrical portmanteau in light crimson cloth laced white.

Life guards
Same dress with white buttonholes laces on lapels. White thread aiguillette on right shoulder.

Trumpeters
Troopers dress in reversed colours, light crimson with white facings. Silver lace on collar, lapels and cuffs. Epaulets in mixed white and light crimson thread.
Brass trumpet with mixed white and light crimson cord.

Chasseurs a cheval 1808-1809

Chasseur

• Dark green coat with short tails and lapels hooked down to the waist. Light crimson collar. Green shoulder straps piped light crimson. Light crimson or green piped light crimson lapels. Light crimson pointed cuffs sometimes shown with green piping. Light crimson turnbacks. White metal buttons.
  In field dress, dark green single breasted “Kinski” coat with light crimson collar and cuffs sometimes piped green. “Soubise” pockets simulated by a light crimson piping.
• Dark green Hungarian breeches with light crimson Hungarian knots and side bands, Hungarian boots with light crimson trim and tassel.
• Black felt shako with black leather top and base band, bearing either a white metal rhomboid plate stamped with Berg lion or French eagle or a large white and light crimson cockade with white strap. Company coloured pompon over white cockade with red centre and white strap. In full dress, white cords and flounders. White metal chinscales and black leather peak.
• Leatherwork and sabre as before. Black leather cartridge pouch.
• White sheepskin schabraque with light crimson wolf teeth.

Elite company
Troopers dress with scarlet fringed epaulets.
Black fur colback with scarlet bag piped scarlet. Scarlet plume and pompon.
Scarlet sabre strap.

Trumpeters
Troopers dress with white lace with light crimson lozenges on collar, cuffs and maybe lapels.

Light horses lancers 1809-1813

Light horses

• Same dress as before until 1811.
  From 1812, dark green polish style coat (kurtka). Light crimson collar piped green. Green shoulder straps piped light crimson. Light crimson lapels. Light crimson pointed cuffs. Light crimson turnbacks and vertical pockets simulated by a light crimson piping. White metal buttons.
  In 1813, white fringed epaulets.
• Breeches and boots as before.
  In field dress, dark green or middle grey overalls with light crimson side band.
• Same headgear as before until 1811.
  From 1812, czapska with light crimson cloth top for 1st regiment and dark green for 2nd one, both piped and laced white and black leather crown bearing a brass sunrays plate with silvered centre bearing a brass crowned N cipher. White plume over white cockade with light crimson centre. White cords and flounders. Black leather peak and brass chinscales.
• Leatherwork and sabre as before.
  From the end of 1809, black wood lance with light crimson over white pennon.
• Saddle dress as before for 1st regiment. White sheepskin schabraque with dark green wolf teeth and cylindrical portmanteau in dark green cloth laced light crimson for 2nd regiment.

Elite company
Troopers dress with scarlet fringed epaulets.
Same colback as before for 1st regiment and czapska with red short and thick plume for 2nd regiment.

Trumpeters
For 1st regiment, troopers dress with imperial livery lace on collar, lapels, cuffs, pockets and around waist buttons.
For 2ns regiment, dark green single breasted coat with light crimson collar and cuffs bearing five white buttonholes laces in breast and white lave around collar and cuffs.