Horses Used in WWI

QUESTION: What horses were used in World War I?

ANSWER: The following information comes from THE HISTORY AND ROMANCE OF THE HORSE, by David Alexander.

Most of the info talks about pre-WW1, but this statement is prophetic...

"A plethora of romantic nonsense has been written about the Civil War. None
of it is more nonsensical than the claim that the Rebel cavalry was so formidable because every gray-clad trooper rode a Thoroughbred or blooded Hackney, while the Federal forces jogged to battle on plowhorses. At the time there weren't enough Thoroughbreds and blooded Hackneys in the South, America, or the world to mount the Southern cavalry. It is true the "Jeb" Stuart expressed a preference for Thoroughbreds...."

And "Both Southern and Northern cavalrymen rode virtually the same types of horses that troopers had ridden in most wars--meaning all types."

Regarding WWI, these references were noted...

Next to a photograph "Uhlan units, mounted on their dark-coated German Coacher type horses, were still factors during the early days of WWI."

And "Uhlans wearing spiked helmets and carrying pennoned lances rode into Belgium on dark-coated Coachers in 1914, but there was little cavalry action on the Western Front in the First World War, although the Russians made extensive use of Cossack regiments on the Eastern Front even after the slaughter at Tannenberg. The British shipped 6,000 horses to France with their first divisions...but eventually returned them to England and replaced them with mules. The mule was the war horse of WWI when the conflict of mud-mired attrition developed. The grand old cavalryman, Charles Scott, who would become commander of the armored force in WWII, was charged with supplying the American Expeditionary Force with mules when we joined the Allies in 1917."