Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Oberstgruppenführer was (from 1942 to 1945) the highest commissioned SS rank with the exception of Reichsführer-SS, which was a special rank held by Heinrich Himmler. The rank was sometimes written as "Oberst-Gruppenführer" and has been translated in various British and American texts as Colonel Group Leader and also "Supreme Group Leader". Oberstgruppenführer was considered the equivalent of a Colonel General (Generaloberst) in the Wehrmacht, which, in turn, is generally seen as the equivalent of full General in other armed forces.