The logical conclusion of these events was that the border was heavily militarized, involving the building of castles and reinforcements of troops in the areas surrounding the Trabancos River, with some castles being erected in the west, such as in Alaejos. Paradoxically, the wars increased the value of the region, and for the first time there began to appear documents recording the area in the files of the cathedrals of Zamora, Salamanca and Segovia including documents regarding: "Siete Iglesias de Trabancos" ("Seven Churches at Trabancos") in 1178, Alaejos ("Falafeios") in 1167, and in 1180, "Eván de Arriba, Eván de Abajo, Valdefuentes" and "Pedroso" (which are now deserted villages), together with "Nava del Rey" in 1265, among others.