Complex sentence: Junge, Christian and Krüger made it out of Berlin to the River Elbe, but the remainder were found by Soviet troops on 2 May, hiding in a cellar off the Schönhauser Allee.
Split into simpler sentences: Junge, Christian and Krüger made it out of Berlin to the River Elbe. The remainder of the group were found by Soviet troops on 2 May while hiding in a cellar off the Schönhauser Allee.