Guardians of the White City are the most select and mighty of the warriors of Gondor, chosen specifically by Boromir. They can only be recruited while Boromir wears the One Ring. They are classified as , making only 3 battalions recruitable at one time. In addition, 2 battalions can also be summoned permanently by Ring Hero Boromir's upgraded Summon Veterans ​ability. This ability has a shorter cooldown than Boromir's life timer with the One Ring, making it possible to summon over the typical 3 heroic unit cap (3 built at Barracks + 6 by summon).