The Ulm Campaign helped the Germans develop what plan behind the German invasion of France and Belgium in 1914?
Ulm Campaign:  The campaign is generally regarded as a strategic masterpiece and was influential in the development of the Schlieffen Plan in the late 19th century. Schlieffen Plan: The Schlieffen Plan (German: "Schlieffen-Plan" , ] ) was the name given after World War I to the thinking behind the German invasion of France and Belgium on 4 August 1914.
The Schlieffen Plan