A forgotten genocide: the ethnic German cleansing. Germans migrated down the Danube in three major waves beginning more than 700 years ago, and settled in mountainous areas of Bohemia and Moravia. These Ethnic Germans became very prosperous and those in Hungary, Romania and Yugoslavia were known as Danube Swabians. 1939 the Czech President expelled German minority to be executed with utmost brutality resulting 1 million sudeten Germans losing their lives. Many Ethnic Germans settled in St. Louis, USA Through interviews with survivors, the memory of this sad period in human history is preserved, and hopefully provides peace to the almost 15 million souls lost.