E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
¶ Horse,
in the British Army:
1
Elliotts Light Horse. The 15th Hussars of the British Army; so called from Colonel Elliott. They are now called the Kings Hussars.
2
Pagets Irregular Horse. The 4th Hussars; so called from their loose drill, after their return from India in 1839. Now called The Queens Hussars.
3
The Black Horse. The 7th Dragoon Guards, or Princess Royals Dragoon Guards; called black from its facings.
4
The Blue Horse. The 4th Dragoon Guards; called blue from their facings.
5
The Green Horse or The Green Dragoon Guards. The 5th Dragoon Guards; called green from their facings. The Princess Charlotte of Waless Dragoon Guards.
6
The Royal Horse Guards (called, in 1690, Oxford Blues from their blue facings) are the three heavy cavalry regiments of the Household Brigade, first raised in 1661.
7
The White Horse. The old 8th Foot; now called The Kings (Liverpool Regiment); called the White Horse from one of the badgesa white horse within the garter.