Blatt enlisted in the
United States Navy after America's entrance into
World War II and was commissioned an officer. He served on a destroyer that escorted
liberty ships to Europe as well as participating in
anti-submarine warfare. After the war, Blatt obtained a
Bachelor of Laws in 1946 from the
University of South Carolina School of Law and he commenced the practice of law in Barnwell for the firm Blatt and Fales; he remained in private practice until 1971. In 1971, his father had to resign as a trustee for the University of South Carolina because of a provision in the
state constitution prohibiting dual office holding. The elder Blatt nominated his son to the board and the
General Assembly approved the nomination. The students responded by hanging an effigy of Speaker Blatt at Maxcy Monument with a poem attached that read "King Sol: Through my son I shall rule, with house members as my tools." As a trustee, Blatt served on the athletic committee and was instrumental in recruiting
Frank McGuire as head coach of the men's basketball team. ==Federal judicial service==