When the Heath Dreams at Night(1952)

Original title: Wenn abends die Heide träumt

A film about men's friendship and the complications of love: Karl and Peter are close buddies since they were pilots in defense of German cities during ww-ii. Now they are working together in a bomb disarm unit. During a vacation they visit Karl's mother and fiancée Helge in the heath-land. When Helge meets Peter, it's love on first sight. But Karl, who's considering quitting his job and buying a local gas station, fails to notice it. Torn between his feelings for Helge and his friendship to Karl, Peter accepts a dangerous job.