The the commander of SM UB-68 on 4 October 1918 was part of a ruling body and succeeded Adolf Hitler. The dissolution of the ruling body was shortly followed by the unexpected suicide of Hans-Georg von Friedeburg.
 It was headed by Grand Admiral Karl Dnitz as the Reichsprsident and Lutz Graf Schwerin von Krosigk as the Leading Minister. 
 Dnitz briefly succeeded Adolf Hitler as the head of state of Germany. 
Generaladmiral" von Friedeburg committed suicide shortly afterwards, upon the dissolution of the Flensburg Government. 
 Under the command of Karl Dnitz, on 4 October 1918 "UB-68" encountered technical problems and had to surface where she was sunk by gunfire at . 
