These men would be called as the infantry, which would be the heart of the army. These foot soldiers would be part of the lower class citizens, mainly poor farmers. The 2 men in the picture are carrying spears and shields and are killing their enemies with it. The other men are following these 2 men, while others are shooting with longbows beside each other. These 2 men seem to be looking up, so their enemy could be on a wall, or on a horse, which could be why the infantry men are looking up when attacking with their weapons. Or, the reason why they could be looking up is maybe they are trying to dodge the enemies' attacks. Maybe, they are looking at the arrows the infantry men are shooting and seeing if they hit an enemy. It could even be that they are looking at the enemy, waiting for the right chance to strike.