 The Crown Prince received his commission as an officer in all three services in 1968, eventually rising to the rank of captain (in the army and air force) and lieutenant (in the navy), before his ascension to the throne.He also completed his academic studies in history, sociology, political science, tax law, and economics at Uppsala University and later Economics at Stockholm University.To prepare for his role as the head of state, Crown Prince Carl Gustaf followed a broad program of studies on the court system, social organisations and institutions, trade unions, and employers' associations.