Georg Ludwig Rudolf Maercker

Georg Ludwig Rudolf Maercker (21 September 1865 in Baldenburg – 31 December 1924 in Dresden) was a German General of World War I.
Following the Armistice of 1918 that saw the end of fighting and of the Bolshevik revolution that led to the creation of the Soviet Union, there were many examples of disturbances throughout Germany. Maercker suggested the formation of Freikorps (Free Corps) to suppress these and a number of formations formed themselves, usually around individual army officers.
A historian K P Fischer has noted:

The backbone of the Free Corps units consisted of declassed imperial officers who were frightened by the prospects of giving up their privileged positions in German society. Having lost the war along with their warlord, they faced a bleak prospect under a Socialist regime that was known to be hostile to the old military establishment.

After leaving the Freikorps, Maercker became active in the Stahlhelm group and was the president of the Saxony chapter. In 1924, Maercker together with Theodor Duesterberg was a leader of the anti-Semitic fraction within the Stahhelm who wanted an "Aryan clause" that would ban Jews from joining the Stahlhelm and expel the current Jewish members.. In March 1924, Maercker and Duesterberg got their way and forced Franz Seldte to adopt the "Aryan clause" and expel all Jews from the Stahlhelm.