Claus Schenk Graf von Stauffenberg became known for...

1. a gold medal at the 1936 Olympic Games.
2. the construction of the Reichstag building.
3. the build-up of the Wehrmacht.
4. the assassination attempt on Hitler on July 20, 1944. ✓

Stauffenberg led a courageous attempt to stop Hitler's regime from the inside to end the war. This event is remembered as a powerful symbol of the internal resistance against the Nazi dictatorship.