[3] In 1941, during the Second World War, Sendak was drafted into the United States Army and served in the Philippines.
In 1968, Sendak was elected Indiana Attorney General, succeeding Democrat John J. Dillon.
Sendak served as Attorney General in the administration of Republican Governors Edgar Whitcomb and Otis Bowen.
As Attorney General, Sendak advocated against revisions to the state's criminal code and supported the use capital punishment in Indiana.
[3] In 1997, Sendak published an autobiography, A Pilgrimage Through the Briar Patch: Fifty Years of Hoosier Politics.