Anton Geiser, Croatian SS officer (died 2012)

Anton Geiser was a Yugoslav-born member of the SS-Totenkopfverbände during World War II, who served as a guard at both the Sachsenhausen and Buchenwald concentration camps. In 1956 he moved to the United States, settling in Sharon, Pennsylvania, where he had family. In 1962 he became a naturalized American citizen. In 2006 he was stripped of his citizenship on the grounds that it would not have been granted had the full details of his role in the German military been known; in 2010 a US judge ordered him deported to Austria, the country from which he had immigrated. He died in Pittsburgh on December 21, 2012, while still battling his deportation.

The Schutzstaffel was a major paramilitary organisation under Adolf Hitler and the Nazi Party in Nazi Germany, and later throughout German-occupied Europe during World War II.