WW2 German RAD Cap Badge, stamped GES.GESCH on the rear.
The Reich Labor Service (Reichsarbeitsdienst; RAD) was a major organisation established in Nazi Germany as an agency to help mitigate the effects of unemployment on the German economy, militarize the workforce and indoctrinate it with Nazi ideology. It was the official state labor service, divided into separate sections for men and women.
From June 1935 onward, men aged between 18 and 25 may have served six months before their military service. During World War II compulsory service also included young women and the RAD developed to an auxiliary formation which provided support for the Wehrmacht armed forces.