Sinchi Roca is said to have created a territorial division of his domains and is considered to be the initiator of the first census of the Inca population. He also ordered all members of his ethnic group (Inca) to pierce their ears as a sign of nobility. He solidifies Inca power in Cusco by creating an army composed of soldiers who belonged to the nobility cast. Sinchi Roca dresses his soldiers in uniform which intimidated his enemies. The chronicler Pedro Cieza de León states that Sinchi Roca built terraces and credited with bringing great quantity of soil to improve the fertility of the valley and of building the first water canal in the Huatanay and Tullumayo rivers.