A fortified encampment was built on a point of land called Lyngs Odde, near the current location of Fredericia, with a rampart stretching to either side of the point, thus protecting the encampment from attacks. However, the fortifications were not perfect, and when Swedish Field Marshal Lennart Torstenson invaded Jutland, he was able to break through the ramparts. It was Frederick III who was finally able to complete the plans for the fortification, also adding a flank fortification on nearby Bers Odde as suggested by Danish Imperial Marshal Anders Bille.