During the German Revolution of 1918–19, Canaris helped organise the formation of "Freikorps" paramilitary units in order to suppress the Communist revolutionary movements that were attempting to spread the ideals of the Russian Revolution into central European nations. He was also a member of the military court that tried (and mostly acquitted) those involved in the assassination of the leftist revolutionaries Karl Liebknecht and Rosa Luxemburg. Also during this period, he was appointed to the adjutancy of defence minister Gustav Noske. In 1919, he married Erika Waag, also the child of an industrialist, with whom he had two children.