Naturally they did not know that Sam had that kind of technique or not right now they are very sure that Sam had that kind of technique. Also as you can tell both of them know that it was Sam who was now present in the battlefield and using his technique he was killing those Warriors and also helping their soldiers.
Actually not only him but at the same time you can see some more people also coming toward the battlefield and all of them were the slaves who previously got captured by the Toron kingdom. But compared to the previous number you can see right now only 250 of them coming toward the battlefield as those other people already left that place when the human king decided to attack their enemy.
