Also in 1929 he became Party Agitation and Propaganda Secretary for the Wasserkante district and a member of the Hannover provincial legislative assembly ("...des Hannoverschen Provinziallandtages").

It was reported that 200 members of the Nazi Party quasi-military wing were mandated to find and arrest Leo Drabent.

[5] He spent the next few months in concentration camps at Brandenburg and Oranienburg, and also at the latter's sub-camp at Gut Elisenau (near Bernau) where he was tortured and badly mistreated.

[2] On 29 March 1943 Hans Neumann, Leo Drabant, his wife along with eight other resistance members were arrested by the Gestapo.

[5] On 13 October 1944 the special People's Court sentenced them all to death because they had "attempted to destroy the resistance of the German people with Communist Propaganda" ( „die Widerstandskraft des deutschen Volkes durch kommunistische Propaganda zu zersetzen gesucht“).