He was among the military officers involved in the clandestine opposition to Hitler and the Nazi regime .
Wilhelm Canaris became chief of the Abwehr , the German military intelligence service in 1935 , a post he would hold until 1944 .
Wilhelm Canaris was among the military officers involved in the clandestine opposition to Hitler and the Nazi regime .
Wilhelm Canaris became chief of the Abwehr , the German military intelligence service in 1935 , a post he would hold until 1944 .