Major General Raymond F. Rees was Deputy Assistant Secretary of the Army for Training, Readiness and Mobilization from 2014 to 2019. He was appointed to that position as a career member of the Senior Executive Service on February 10, 2014. He is also a retired United States Army major general who served as the adjutant general of Oregon and was director of the Army National Guard and acting chief of the National Guard Bureau.

The chief of the National Guard Bureau (CNGB) is the highest-ranking officer of the National Guard and the head of the National Guard Bureau. The position is a statutory office, held by a federally recognized commissioned officer who has served at least 10 years of federally recognized active duty in the National Guard; the Army National Guard or the Air National Guard. In a separate capacity as a member of the Joint Chiefs of Staff, the chief is a military adviser to the National Security Council, the Homeland Security Council, the secretary of defense, and the president on matters pertaining to the National Guard.