Il costo della guerra nel Regno di Sardegna attraverso i libri del batlle general Jordi de Planella (1396-1399)

This paper offers thinks about the administration and defense of Regnum Sardiniae in the late XIV century (1396-1399). From Jordi de Planella's financial books who was the "batlle general" of Sardinia, it become visible the progressive increase of the remarkable budget allocated by the Crown of Aragon to the defense of the Catalan-Aragonese garrisons survived in southern Sardinia, as proof of the strongest interest led to the Sardinian kingdom. In this paper emerges the role of the static defensive systems and its costs and also the function assumed in the "regnum" by the "batllia general", a responsible institution to appropriate and administer the money gived for that purpose.