In what year did Germany introduce a plan which included attacking France in the event of a Russian attack on Germany?

Answer 1

In 1905, known as the Schlieffen Plan, the German, Von Schlieffen drew up a plan of action that involved attacking France through Belgium if Russia made an attack on Germany.

Answer 2

The plan to attack France and then Russia quickly was called the Schlieffen Plan.

Answer 3

Depends on the war. In World War 1 it was the Schlieffen plan. In World War 2 it was named Fall Gelb or "Case Yellow", which was based off of the Schlieffen plan.