Following his Rhine crossing in mid-February 1703, Marshal
Villars found the passes through the
Black Forest to be still impassible because of snow. Therefore, he initially occupied Kehl Fortress on 12 March as his base east of the Rhine, united with the army of Marshal
Tallard, and on 19 April 1703 began an attack on the Bühl-Stollhofen Line. He bombarded the line south of Kappelwindeck and tried to bypass the line to the east with 25 battalions under Blainville. Both attempts, on 19 and 24 April, failed because the French could not capture the fortifications at Obertal. On 25 April, Villars pulled back. In summer 1703, however, Margrave Louis William could not stop Villars marching up the
Kinzig valley and on into Bavaria. There, Villars was victorious in the
First Battle of Höchstädt. Likewise in 1704, Tallar passed through the
Black Forest unhindered along the
Dreisam Valley. After the death of Margrave Louis William (9 January 1707), Villars captured the Bühl-Stollhofen Line in May without a fight and had it destroyed. Several months after the loss of the Bühl-Stollhofen Line, work began on the
Ettlingen Line under the Rhine Army commander,
George Louis of Brunswick-Lüneburg. The line was reinforced during the
War of the Polish Succession (1733–1738), was destroyed by the French in 1734 broke and was rebuilt in 1735. == Today ==