The history of the Greatmen is lost in time, and to all appearances, even to the Greatmen.
Towering an average 8' tall, the physical prowess of this race stems from the blessings of an ancient war god. They served their god with honor and great loyalty and enjoyed great prosperity. Their culture was a wonder and they enjoyed mastery of arms and magic. For a century, they faced all foes and crafted a mighty empire. After the century of war came a great peace, as all foes on all borders had been defeated. What followed was decades of peace and great prosperity.
On the century aniversary of their last victorious battle, their god forsake them. Angered by their peaceful ways, he struck them dumb, hoping to cast them all into the brutal savagery of ignorance. Such was the will and spirit of the Greatmen, they resisted the intent of the curse. While suffering reduced mental and magical capacity, striken unable to voice their history for fear of the curses madness possessing them, they pledged to make war no more, to never harm each other, to fight only in self defence or to strike against the forces and desires of the god that had forsaken them.
The nature of the curse prevents the Greatmen from speaking openly or amongst themselves about their history. Over the passing of the time, all that remains is their code, taught to each youth as they grow into adulthood. While the name of the god is forgotton with the rest of their history, the intent of the oath is never forgotton. Peaceful and surprisingly gentle, the entire race remains dedicated to opposing the forces of injustice, whatever for they might take.
Mostly, they farm, raise their battle cats and live peaceful lives, rarely called to to arms. On occassion, one of their number will rise in the name of justice, fate creating a hero that harkens back to their days of ancient glory.