From 1942 to 1946, he served in the United States Navy on a destroyer in the Pacific Theater of World War II as a lieutenant.
[5][6] In 1948, he was admitted to the Connecticut Bar Association,[6] and became the Torrington Municipal Court judge in 1949.
[5] While on the Connecticut Superior Court, Speziale was noted for his decision in the Peter Reilly murder case[5] where he declared Reilly innocent non obstante verdicto after reviewing further evidence not presented during the case.
[3][7] In 1977, Governor Ella Grasso nominated Speziale to the Connecticut Supreme Court.
[5][7] On November 21, 1984, Speziale retired from the Connecticut Supreme Court and returned to private law practice.