Four months later he was promoted to lieutenant colonel, and he remained commander of the battalion throughout the Italian campaign and the invasion of southern France.

After the war, then-Colonel Davison was assigned to the Plans Section, Headquarters Army Ground Forces at Fort Monroe, and later took command of the 18th Mechanized Cavalry Squadron stationed in Puerto Rico.

He received a master's degree in Public Administration from Harvard University in 1951, and following a stint in the Office, Chief of Legislative Liaison, he was assigned to his alma mater as Commander, First Regiment, United States Corps of Cadets in 1954.

In 1970, he assumed command of II Field Force, Vietnam, and was responsible for conducting the Cambodian Campaign.

After retiring from the Army, Davison held various positions in the civilian sector, to include President of the United Service Organizations, Vice President of Joseph R. Loring Associates, an architectural engineering firm, a board member of Mercedes-Benz of North America, Vice Chairman of the Army and Air Force Mutual Aid Association, President of Shannon Enterprises, member of the advisory board of the International Security Council, and Board of Trustees of the Association of Graduates, United States Military Academy, and later its president from 1983 to 1989.

[2] Jan Scruggs, president of the Vietnam Veterans Memorial Fund, said "He was a think-out-of-the-box kind of guy.