The decades from the 1930s were a hard time for Japanese researchers. However, Shoda continued to apply himself to learning. After World War II, he was elected the first Chairman of the Mathematical Society of Japan in 1946, when the predecessor was divided into the Mathematical Society of Japan and the Physical Society of Japan. In this role he managed to reconstruct Japanese mathematics both theoretically and organisationally. Also, he was eager to attempt to keep the educational standard at Osaka University as its faculty staff. In this period, he published "General Algebra", another textbook in Japanese. In 1949 Shoda was awarded the Japan Academy Prize in recognition of his fine achievements. Also that year he was elected the Dean of the Faculty of Science at Osaka University.