Background
Senn was born in Zofingen and, as a young officer, studied at the Ecole Supérieure de Guerre in Paris.
Senn was born in Zofingen and, as a young officer, studied at the Ecole Supérieure de Guerre in Paris.
As Army head of operations he unsuccessfully advocated a policy of nuclear armament as a deterrent against the Warsaw Pact in the 1960s. Switzerland eventually ratified the Nuclear Non-Proliferation Treaty. As Chief of the General Staff, holding the rank of Korpskommandant (North Atlantic Treaty Organization: OF-8), Senn was Switzerland"s most senior military officer from 1977 to 1980.
After his retirement, he authored two standard works about Swiss defence efforts during World World War World War II