Toying with the idea of an empire/kingdom established by conquest in which the founder granted small amounts of land to his ordinary soldiers in return for continuing military service. Partly driven by geographic/cultural factors, but primarily by desire to undercut existing noble power/not create competing power structures, creating a feudal yeoman/armsman class. Is there an historical example of this? How much land would be required to support a man-at-arms (med-heavy foot or light cav)?