 In 1450, during Count Ulrich V's war against 30 Swabian Imperial Cities, Ilsfeld was attacked by Heilsbronn forces; the village was laid waste, with 40 people killed and 300 head of livestock removed.In 1456 the "Württembergischer Landgraben" (Württemberg Ditch) was created as a border fortification running north of Ilsfeld, with a defensive tower, the "Landturm", north of the hamlet of Wüstenhausen.In 1460 the Battle of Wüstenhausen took place there, with Duke Ulrich defeating the forces of Frederick the Victorious, Elector Palatine.