Wilhelm Canaris

Wilhelm Franz Canaris (1 January 1887 – 9 April 1945) was a German admiral and the chief of the ''Abwehr'' (the German military-intelligence service) from 1935 to 1944. Initially a supporter of Adolf Hitler and the Nazi Party, Canaris turned against Hitler and committed acts of both passive and active resistance during World War II following the German invasion of Poland in 1939.

Being the head of Nazi Germany's military-intelligence agency, he was in a key position to participate in resistance and sabotage the Nazi war effort. As the war turned against Germany, Canaris and other military officers expanded their clandestine opposition to the leadership of Nazi Germany. By 1945, his acts of resistance and sabotage against the Nazi regime came to light and Canaris was hanged in Flossenbürg concentration camp for high treason as the Allied forces advanced through Southern Germany. Provided by Wikipedia