Final answer:
Elder Uchtdorf, likely Dieter F. Uchtdorf of the LDS Church, was baptized after World War II, possibly in Frankfurt, Germany, but the exact location is not publicly known. The practice of adult baptism is both a characteristic of the LDS Church and older Anabaptist traditions such as the Swiss Brethren, but they are different entities with varying historical contexts.
Step-by-step explanation:
The individual mentioned, Elder Uchtdorf, likely refers to Dieter F. Uchtdorf, a current member of the Quorum of the Twelve Apostles of The Church of Jesus Christ of Latter-day Saints (LDS Church). However, there is no specific public information available about the exact location where Elder Uchtdorf was baptized.
The history of Anabaptists, such as the Swiss Brethren, is distinct from that of the LDS Church, even though both practiced adult or believer's baptism. The Anabaptists emerged in the 16th century in central Europe and were one of the groups to reject infant baptism in favor of adult baptism, believing that becoming a Christian should be a conscious decision made by an adult.