Alfred von Schlieffen was instrumental in devising the plan that was used after which event?
Alfred von Schlieffen Alfred Graf von Schlieffen, mostly called Count Schlieffen (] ; 28 February 1833 – 4 January 1913) was a German field marshal and strategist who served as Chief of the Imperial German General Staff from 1891 to 1906. His name lived on in the 1905–06 'Schlieffen Plan', then "Aufmarsch I", a deployment plan and operational guide for a decisive initial offensive operation/campaign in a one-front war against the French Third Republic.
Operation Tannenbaum Operation "Tannenbaum (English: Operation "Fir Tree" or "Christmas Tree"), known earlier as Operation "Green (German: "Unternehmen Grün" ), was a planned but cancelled invasion of Switzerland by Nazi Germany during World War II.