Original Postwar Signature on a Postwar Photo of Dr. Heinz Lotze. Hauptmann d.R. Heinz Lotze (25.11.1912 † 02.10.1989) earned the Ritterkreuz des Eisernen Kreuzes on May 9, 1945 as Führer of the I. Bataillon/ Panzer-Grenadier-Regiment “Kahle” of the Kampfgruppe “Grosan”. Condition as seen.