sentences:  By late on the 19th, Austrian and French soldiers had been skirmishing at outposts for more than 30 hours, with the action growing increasingly intense.In the early hours of the 21st, General Lefebvre informed Jourdan that the Austrians were attacking all his positions, and that the general engagement would begin shortly.After 24 hours of fighting, Austrian forces pushed Lefebvre and Saint Cyr's troops back to the Pfullendorf heights.