Fernand Kaisergruber was born in 1923 in to the family of an administrative officer in the Belgian Colonial Office. While still in school, he fell in with Leon Degrelle's Rex party before the coming of the Second World War. Amid the turmoil of the German conquests of 1940-41, his interesting wanderings led to his returning from the factory job he had taken in Germany and enlisting in the Walloon Legion that had formed in 1941 with the German Army. He finished the war in SS Sturmbrigade Wallonien as a sergeant, or SS-Unterscharfuehrer, having fought as an infantryman in the Caucasus, the Battle of Korsun/Cherkassy and the Defence of the Oder River, all against the Red Army. After the war, he raised a family and worked as a sales representative and insurance inspector. He became secretary and archivist of the Walloon volunteers veteran's league. He has participated and given interviews in documentaries on film and television, and assisted researchers and scholars for several decades in their work. Numerous scholars have read and endorsed the French edition of his war experiences as authentic and revealing with unique insights into the campaigning and military experiences of foreign volunteers in the German forces during the Second World War.