Answer
The HIAG (Hilfsgemeinschaft auf Gegenseitigkeit der Angehörigen der ehemaligen Waffen-SS, Mutual Aid Association of Former Waffen-SS Members) was a lobby group Dietrich joined after his release from prison. Formed in 1951, its goals included providing financial aid to former Waffen-SS members, promoting camaraderie among them, and influencing public opinion about the Waffen-SS.