 On 21 March , at 2200 , Jourdan ordered the wounded to be transported to Schaffhausen in Switzerland , via Stockach . The main army then began its own retreat in the early morning of the 22nd . The reserve division of d 'Hautpoul left first , and pulled back via Stockach to Emmengen ob Eck . The first division pulled back to Bodman , on the northern tip of the Überlingen @-@ finger of Lake Constance ; in the retreat , a portion of the force was encircled and cut off by the 2nd Lancers of Karl Philipp , Prince Schwarzenberg 's brigade , and more than 500 were taken prisoner . 
