Pítati
The Pitati were a contingent of Nubian archers of ancient Egypt that were often requested and dispatched to support Egyptian vassals in Canaan. They are recorded in the correspondence of the 1350 BC Amarna letters, and were often requested to defend against the Habiru, also rogue vassal-kings and foreign troops of neighboring kingdoms, who were on the attack.
The vassal cities and "city-states" were constantly requesting the services of the Pharaoh's armies, by means of this "archer-army" force, basically garrison forces. A request for lodging, and preparations of food, drink, straw, and other supplies required, is often demanded by the pharaoh, for a small, or a large contingent.
The pitati archer force were mercenaries from the southern Egyptian "land of Kush".
The first use of Nubian mercenaries was by Weni of the Sixth Dynasty of Egypt during the Old Kingdom of Egypt, about 2300 BC.