[4] Following Military Police Officer Basic Course and Advanced training, he was assigned as the first active duty provost marshal since 1954 to Fort McCoy, Wisconsin.[4] He initially studied under the Order of Friars Minor of the Holy Name Province, but was later recruited for the Archdiocese of Baltimore by Archbishop William Borders.[5] Spencer served in South Korea, Bosnia, Egypt and at the Pentagon during the September 11, 2001, attacks and Germany in capacities to include brigade and division positions.In the summer of 2005, Spencer began a one-year program as a student of Clinical Pastoral Education at Walter Reed Army Medical Center He was promoted to lieutenant colonel in 2005, and was appointed an episcopal vicar for the Archdiocese for the Military Services in 2006.[1] In the summer of 2006, Spencer was assigned to serve as the senior clinician at the 121st Combat Support Hospital, the deputy 18th MEDCOM command chaplain, and the Catholic pastor of Yongson in Seoul.