At the end of the Second World War, two citizens from Adensen, Conrad Kösel and Rudolf Ohlmer, wanted to prevent German soldiers from blowing up the bridges at Marienberg and the Leine Bridge at Schulenburg. When they arrived at the Marienberg Bridge on 6 April 1945 it had already been blown up. Together with Hans Bremer, the owner of the Calenberg Mill, they were able to prevent the Calenberg Bridge being blown. Conrad Kösel and Rudolf Ohlmer were shot dead in their car during the retreat on the K 506 road just before Adensen by the advancing tanks of the US Army. The Calenberg Bridge had already been prepared for demolition, but Hans Bremer had invited the demolition guard commando of the Volkssturm to vespers and entertained his guests for so long that the bridge was seized by the Allies.