Slavich began his military career in 1945 with two-year enlistment in the United States Marine Corps, after which he attended the University of San Francisco, serving as a Reserve Second Lieutenant from February 1950.
Slavich began his military career in 1945 with two-year enlistment in the United States Marine Corps. He attended the University of San Francisco. He was serving as a Reserve Second Lieutenant from February 1950 after 1945 with two-year enlistment in the United States Marine Corps.