[1] After finishing his studies in 1931, he returned to the Archdiocese of Tokyo, where he served as a seminary professor and director general of the Catholic Press Centre until 1936.

[2] On November 25, 1941, Taguchi was appointed Bishop of Osaka by Pope Pius XII.

[2] Pope Paul VI created him Cardinal Priest of S. Maria in Via in the consistory of March 5, 1973.

[2] During the Second World War, he was mobilized by the Japanese authorities to establish contacts for the government with the Catholics of the Philippines.

[3] Apparently, this move alerted the American Archbishop of Manila, Michael J. O'Doherty, who claimed that this was an attempt to supplant his authority as the Primate of the Philippines.