What Horse Breed did the Samurai Warriors Used

The samurai was often linked to his sword. But like many warrior classes in his period, a samurai is a practical soldier on the battlefield. Meaning, he will resort to anything to get the job done and was trained in many aspects of combat. Hence, the sword wasn't just his weapon. In fact, the tachi or katana was a sidearm while the bow and arrow, polearms and even firearms were more preferred.