He later served in the United States military in the European Theatre of World War II.
[1] Christensen received his bachelor's degree in archeology from Brigham Young University (BYU).
[1] He was also closely connected with the Society for Early Historic Archaeology, which he headed after his retirement from BYU.
In 1985 Christensen wrote a long paper with John A. Tvedtnes entitled "Ur of the Chaldeans: Increasing Evidence on the Birthplace of Abraham and the Original Homeland of the Hebrews".
Among his callings in the LDS Church, Christensen was a counselor to a Bishop in Orem, Utah.