(A) ** Attack France first, then Russia.
(B) Attack Russia first, then France.
(C) Send half of the army to France and half to Russia.
(D) Ally with Russia to fight France.
EXPLANATIONS BELOW
Concept note-1: -Prior to World War I, The Schlieffen Plan established that, in case of the outbreak of war, Germany would attack France first and then Russia. Instead of a ‘head-on’ engagement, which would lead to position warfare of inestimable length, the opponent should be enveloped and its armies attacked on the flanks and rear.
Concept note-2: -The French-Russian alliance had raised the prospect that Germany might face a war on two fronts. In response, Kaiser Wilhelm II ordered Alfred Graf von Schlieffen, chief of the German General Staff, to develop a plan to successfully fight both France and Russia.
Concept note-3: -The Schlieffen Plan was a battle plan drawn up by German military strategists. Its purpose was to secure victory in a war against both France and Russia. It formed the basis of Germany’s offensive in August 1914 but its successes were limited.
Concept note-4: -War against France (1905), the memorandum later known as the “Schlieffen Plan", was a strategy for a war of extraordinarily big battles, in which corps commanders would be independent in how they fought, provided that it was according to the intent of the commander in chief.