Schlieffen's plan was revived by Erich Ludendorff, who was promoted to a senior position in the General Staff in 1908. After measures were taken to impose secrecy, Ludendorff began reworking the plan in 1909 with the help of Hermann von Stein and Gerhard Tappen.<ref>Mombauer, p. 90.</ref> In 1912, von Stein left the General Staff and Ludendorff replaced him in the No. 2 spot. | Schlieffen's plan was revived by Erich Ludendorff, who was promoted to a senior position in the General Staff in 1908. After measures were taken to impose secrecy, Ludendorff began reworking the plan in 1909 with the help of Hermann von Stein and Gerhard Tappen.<ref>Mombauer, p. 90.</ref> In 1912, von Stein left the General Staff and Ludendorff replaced him in the No. 2 spot. |