They go by type not breed. if the horse is of the right type they will use it no matter the breed.
How many different breeds of horse are there? 102 or 400
Andalusians are usually the breed that they would use for the police services they would also use them to guard certain monuments and buildings
Back in the middle ages heavier draft breeds, Friesians, and certain carriage breeds were used quite often, as was the Spanish -Norman horse.
It depends what you want to use the horse for. If you wanted a jumping horse, you would need a sport-type horse (Thoroughbred, Warmbloods, certain pony breeds etc.) where as if you wanted a horse for say, driving, you would need a draft or pony (Percheron, Fell, Falebella etc.)
They are used in the same capacity as most other breeds of sport horse, dressage, jumping and eventing.
Thouroughbreds are specially bred racehorses which are tall and built for speed. They are one of the oldest and most pure breeds of horse.
The household cavalry still use horses to this day though they be for ceremony's only.
i belive it was the Assyrains.
olive wood
There are no "dressage horses" but some breeds are used for dressage more than others,, e.g. you would probably use a warmblood rather than a cob. But basically, a dressage horse is a horse that does dressage :)
There are many different breeds of horses, each with its own characteristics and strengths. Some popular breeds include the Thoroughbred, Quarter Horse, Arabian, and Clydesdale. These breeds can vary in size, color, temperament, and intended use, such as for racing, showing, or riding.