The 1st Infantry was based at Vancouver Barracks, Washington, until 10 May 1912, when it moved to the Schofield Barracks in the Territory of Hawaii.[3] While he was stationed there, he made two trips back to the mainland: one was to attend a musketry course at Fort Benning, Georgia, and the other back to Ohio to marry Florence Estelle Von Kanel of Bowling Green, Ohio, on 21 October 1913. They had two sons: Jonathan Frederic Ladd, who was born in Bowling Green on 12 May 1921, and James Von Kanel Ladd, who was born there on 17 June 1923.[2]
On 30 June 1920, Ladd reverted to his substantive rank of captain, but he was promoted to major again the next day. The 4th Division relocated to Camp Lewis, Washington, and on 2 September he transferred to the 21st Infantry Regiment at Fort Douglas, Utah. On 9 October 1920, he became a student at the Infantry School at Fort Benning, and he remained there after graduation on 30 June 1921 as an instructor. From 24 August 1922 to 5 July 1925 he was an instructor in tactics at West Point. He attended the Command and General Staff College at Fort Leavenworth, Kansas,[4] from 19 August 1925 to 19 June 1926, where his classmates included Major Dwight D. Eisenhower.[2] Ladd then returned to Fort Benning for a second tour of duty as an instructor.[4] From 6 September 1930 to 12 June 1931 he attended the Tank School at Fort George G. Meade, Maryland. He was a member of the Tank Board there until 4 August, and then the Infantry Board at Fort Benning until 29 April 1935.[6]
With the prospect of war with Japan, the Territory of Alaska looked vulnerable. Ladd, who was promoted to brigadier general on 4 August 1941, assumed command of Fort Richardson, Alaska on 4 September 1941. He commanded the Allied troops at Fort Glenn, Alaska from 13 June to 15 September 1942, at Fort Richardson again until 20 January 1943, and at Fort Glenn again from 21 January to 3 December 1943.[9]
Ladd's next assignment was as commander of Camp Reynolds and the Army Service Forces Replacement Depot, from 17 December 1943 to 20 February 1945.[9] Camp Reynolds was closed on 11 December 1944.[10] Ladd then went to the European Theater of Operations, where he commanded the Western District of the Normandy Base Section from 27 February 1945 to 17 May 1945. Following the departure of Major General Henry S. Aurand, he also assumed command of the Normandy Base Section as well on 8 May 1945.[9][11] He commanded the 9th Infantry Division in the Occupation of Germany from 22 May 1945 to 30 January 1946, but the war ended before it saw further action.[9]
Post-war
After the war, Ladd returned to Fort Benning, where he was a member of the Army Ground Forces Board. He was reduced to his substantive rank of colonel on 28 February 1946, and retired at his own request on 30 September 1947. He was promoted to brigadier general on the Retired List on 16 August 1948.[9] Of the places that he had been stationed, Ladd liked the San Francisco area best, and Palo Alto, California.[2] His older son Fred entered West Point in 1939, but flunked out in his first year. He graduated from the University of Washington in 1943 and enlisted in the Army. He received a Regular Army commission, and fought in the Korean War and commanded Special Forces in Cambodia during the Vietnam War, rising to the rank of colonel.[12] Ladd's younger son Jim also went to West Point. He graduated 587th in the class of 1946. He too reached the rank of colonel, and was awarded the Distinguished Service Cross for gallantry in the Korean War.[13][14] Ladd died from leukemia at Letterman Army Hospital in San Francisco on 14 December 1957, and was interred in San Francisco National Cemetery.[2]
Ancell, R. Manning; Miller, Christine (1996). The Biographical Dictionary of World War II Generals and Flag Officers: The US Armed Forces. Westport, Connecticut: Greenwood Press. ISBN0-313-29546-8. OCLC231681728.
Ruppenthal, Roland G. (1959). Logistical Support of the Armies(PDF). United States Army in World War II – The European Theater of Operations. Vol. II, September 1944 – May 1945. Washington, DC: Center of Military History, United States Army. OCLC8743709. Retrieved 6 March 2020.