Reference Breeders:

Military Breeding Program  

The Spanish Military is very influential in all aspects of Andalusian breeding.  Since the Andalusian is primarily a warhorse, the Spanish Cavalry controlled the Stud Book.  The Military inspect all registered horses and approve breeding stock.

The Military runs their own breeding facilities (Yeguada Militar) and stallion depots, the most famous of which is in Jerez.  The mission of these stallion depots is to improve the quality of the breed and anyone can bring his mares and breed them to quality stallions for a nominal fee. 

Traditionally, many of the best stallions were either purchased or bred by the Military.  Originally the Military used stock from Muira, Baones, Gurrero and Escalera as the basis of their bloodlines.  They also periodically infused Carthusian/Bocado blood into their program.