Schnibbe joined the Hitler Youth at the age of twelve, against the wishes of his father, and was sworn in on April 20, 1936 (Hitler's birthday). At first, he was entranced by the campfires and parades that the Hitler Youth got to participate in. However, in later years he grew weary of the constant pressure and conformity, and started to miss the Hitler Youth meetings. He was expelled from the organization for punching his youth leader in the face. He was relieved that he had finally gotten out of the group's clutches, but he later became active in resistance during World War II in 1941.

Schnibbe and his friend Helmuth Hübener often listened to the German-language broadcast of the BBC on Hübener's shortwave radio.Listening to radio stations not approved by the Nazis was illegal, but they were both intrigued by the differences in information that the legal German stations reported and the British newscasts. They both concluded that the German stations were spouting propaganda and withholding the real information from German citizens. Hübener decided that he had to do something about this, to inform the public that the Nazi Government was lying to them. He began typing up articles critical of the government and Hitler. Though originally apprehensive of his friend's work, Schnibbe began helping Hübener's cause, along with 15-year-old Rudolf Wobbe, the third member of the teenage group, and started distributing flyers throughout the city of Hamburg. He constantly was on the lookout for the numerous Nazi informants that lurked in the city. The boys agreed that if one of them was captured, that boy would take full responsibility for the work and protect the other two. They distributed flyers for several months, putting them in mail boxes and dropping them in public places. The Gestapo began an investigation to find the authors, and they found out that Hübener was involved. They arrested him, and after days of torture and interrogation, he told them of his accomplices. However, Hübener said that he was the mastermind and only gave the flyers to them, and took all of the blame. This spared the lives of the two other boys from the death penalty, and Schnibbe only received five years imprisonment, while Hübener was executed by beheading.

Near the end of World War II, advancing Soviet troops overran the labor camp where Schnibbe was imprisoned, and held him as a prisoner of war for four years. He eventually emigrated to the United States and lived in the Salt Lake City, Utah area. . In 1985, Schnibbe was honored by the German government as a resistance fighter, a year after he wrote a book about his experience, The Price: The True Story of a Mormon Who Defied Hitler. Later, in 1995, that book was substantially revised by Schnibbe himself, as well as co-authors Alan F. Keele and Blair R. Holmes, in a book entitled "When Truth Was Treason," (University of Illinois Press and Academic Research Foundation/Stratford Books of Provo, Utah). Schnibbe died from Parkinson's disease in a care facility in Holladay, Utah on May 9, 2010.

The story of Schnibbe and his youthful comrades was documented in the 2003 film Truth & Conviction, written and directed by Rick McFarland and Matt Whitaker. Later released on DVD, it was sponsored by the BYU College of Humanities.

Truth & Treason, a motion picture based on the Hübener Group, is currently being produced by Russ Kendall, Micah Merrill, and Matt Whitaker of Kaleidoscope Pictures. Whitaker will also direct the film, to be filmed in Budapest, Hungary, in late 2010 for theatrical release in 2011. The script was written by Ethan Vincent and Whitaker. Haley Joel Osment has been cast as Helmuth Hübener. Max Von Sydow is to play Hitler-appointed "Blood Tribunal" judge, Karl Engert.

• Bartoletti, Susan "Hitler Youth: Growing Up in Hitler's Shadow" 113-117, Scholastic, April 2005

Karl-Heinz Schnibbe