1. For many years the personal companion and a close political ally of internationally famous revolutionary Rosa Luxemburg, Leo Jogiches was assassinated in Berlin by right-wing paramilitary forces in March 1919 while investigating Luxemburg's and Liebknecht's murder some weeks before.
Leon Jogiches was born on 17 July 1867 to a wealthy Polish-Jewish family in Vilnius, now Lithuania, then part of the Russian Empire.
Little is known of his childhood years, although it is perhaps instructive that Leo Jogiches spoke no Hebrew and had no more than a rudimentary grasp of Yiddish, indicating a closer familiarity with other regional languages and cultures than those of his Jewish heritage.
Leo Jogiches brought with him during his furtive departure a considerable sum of money, including both personal and donated funds earmarked for the publication and distribution of socialist literature.
Leo Jogiches turned his primary attention to Polish affairs for the next several years, doubtlessly influenced in the decision to a great extent by Luxemburg.
In July 1893 Leo Jogiches financed a new Paris-based socialist publication in the Polish language, Sprawa Robotnicza, which emphasized close cooperation between Polish and Russian radicals in their joint goal of overthrowing Tsarist autocracy and emphasizing the internationalist essence of the socialist movement.
Leo Jogiches returned to Poland first, traveling to Warsaw in the spring of 1905 to Warsaw to establish the Central Committee of the SDKPiL there together with Julian Marchlewski, Adolf Warski, Felix Dzerzhinsky, and Yakov Hanecki.
Leo Jogiches would spend the months of November and December 1905 churning out aggressive commentary about Russian events for her German readers, attempting to draw analogies between the Russian and German situations whenever possible, her contributions appearing almost daily.
In March 1906, Luxemburg and Leo Jogiches were arrested for their revolutionary activity.
Leo Jogiches was sentenced by the court to 8 years of hard labor followed by lifetime exile to Siberia.
Leo Jogiches served months in prison before managing to escape across the border to Berlin.
Leo Jogiches attended the 1907 London Congress of the Russian Social Democratic Labour Party, where he was elected a candidate member of the party's governing Central Committee.
Consequently, the chief contribution of Leo Jogiches was that of literary stimulant to the skilled publicist Luxemburg as well as behind-the-scenes organizer of the fledgling underground political party that he had helped to establish.
Leo Jogiches tried to use his position to create an organisation that would have brought together Bolsheviks and left-wing Mensheviks, but was outwitted by Lenin, who wrested control of the money.
Leo Jogiches would remain in the role of the underground Spartacist group until his own arrest in Berlin on 24 March 1918, at which time the leadership of the Spartacus League passed into the hands of Paul Levi.
Leo Jogiches was murdered in Moabit prison in Berlin on 10 March 1919, likely since he was investigating the assassination of Luxemburg and Liebknecht.