 Complete the following phrase:  Appointed commander-in-chief of the Army of the Rhine, Pichegru attacked the Coalition army of Dagobert Sigmund von Wurmser in the Battle of Haguenau in 1793. Over a period of weeks the Coalition Forces were driven back step by step in bitter fighting. The intervention of the Army of the Moselle under Hoche at the Battle of Froeschwiller in late December finally caused Wurmser to abandon Alsace. For the 