General Gaucher was the commander in command of the occupation of the industrial Ruhr River valley region in Germany by French troops in 1921. The action was provoked by German deficiencies in the coal and coke deliveries to France required by the reparations agreement after World War I. French occupation of Düsseldorf, Duisburg, and Ruhrort in 1921 was followed by French-Belgian occupation of the entire region in 1923. Passive resistance by German workers paralyzed the Ruhr's economy and precipitated the collapse of the German currency. The dispute was settled by the Dawes Plan, and the occupation ended in 1925.