It is believed that it was here, on the 11 November 1918, that Karl Liebknecht and Rosa Luxemburg’s leftist revolutionary group renamed themselves the Spartakusbund (The Spartacus League).
Three months later, on April 6, 1917, the USPD was founded at a conference in Gotha, with Hugo Haase as the party's first chairman; the Spartakusbund also merged into the newly founded party, but retained relative autonomy.
Otto Rühle (23 October 1874 in Großschirma – 24 June 1943 in Mexico) was a German Marxist active in opposition to both the First and Second World Wars, and a founder along with Karl Liebknecht, Rosa Luxemburg, Franz Mehring and others of the group and magazine Internationale, which posed a revolutionary internationalism against a world of warring states, and also the Spartacist League (Spartakusbund in German) in 1916.