[12] After World War II, Farrell was assigned to Fort Bragg, North Carolina as commander of the 13th Airborne Division Artillery.

[14] He served in this assignment for only a few months before being appointed as chief of the Air Branch at Army Ground Forces, where he remained from late 1946 until 1948.

[15] Farrell was named director of the Technical Training Group at Sandia Missile Base, New Mexico in 1948.

[27][28][29][30] In 1959, General Farrell was assigned as commander of the Seventh United States Army, remaining in this post until he reached retirement age in 1960.

[31][32] After retiring from the Army in 1960,[33][34][35] General Farrell was appointed as New York State's Civil Defense Director, serving from 1961 to 1963.

[41] Their son Francis William Farrell Jr. (born 5 October 1938) is a 1960 graduate of the U.S. Military Academy who served in Vietnam[42] and attained the rank of colonel.