Gröning stated that his childhood had been one of "discipline, obedience and authority". Gröning was fascinated by military uniforms, and one of his earliest memories is of looking at photos of his grandfather, who served in an elite regiment of the Duchy of Brunswick, on his horse and playing his trumpet. He told Der Spiegel in 2005, that as a child, he played marbles in the street with Anne Selig, the daughter of a Jewish ironmonger whose store was next to his home. When Nazi storm troopers held up a sign outside the shop saying, "Germans, do not buy from Jews," he said, he was unmoved. He joined the Scharnhorst, the Stahlhelm's youth organisation as a small boy in the 1930s, and later the Hitler Youth when the Nazis came to power in 1933. Influenced by his family's values, he felt that Nazism was advantageous to Germany and believed that the Nazis "were the people who wanted the best for Germany and who did something about it." He participated in the burning of books written by Jews and other authors that the Nazis considered degenerate in the belief that he was helping Germany free itself from an alien culture, and considered that National Socialism was having a positive effect on the economy, pointing to lower unemployment.