 By 12 March, the village and the surrounding farms were filled with Lancers ("Ulanen") and Hussars ("Hussaren") and by the 17th, the Austrian advance guard had established forward posts at Buchau, Altshausen and Waldsee.The remainder of Charles' army, at this point nearly 110,000 strong, had established itself along a line from Ulm to Lake Constance.By 18 March, Jourdan had formed his headquarters at Pfullendorf, on the heights above Ostrach.