In early 1919, Spaatz was appointed to lead one of the three "troupes" of the U.S. Army Air Service Victory Loan Flying Circus. His group consisted of about twenty-five officers and fifty enlisted men. His airplanes on the tour included five JN6 Jennies, five Fokker D VIIs, four RAE SE-5s and five Spad VIIs. The team gave promotional rides and flew aerial demonstrations across the Western and Southwestern United States from early April through mid-May 1919 to raise money to retire the World War I debt. Spaatz served in California and Texas and became assistant department air service officer for the Western Department in July 1919. Spaatz experienced the chaotic ups and downs in rank common to Regular officers in 1920, when the
National Defense Act of 1920 reorganized the military. He first reverted to his permanent rank of captain of Infantry on 27 February 1920. On 1 July, when the
Air Service became a combatant arm of the line, he transferred to the Air Service as a captain, then was promoted to major on the same date by virtue of a provision in the National Defense Act that allowed officers who earned their rank in service with the AEF to retain it. This made him senior to a number of officers, including
Henry H. Arnold (his superior at the time), with greater longevity of service. On 18 December 1922, Spaatz was discharged when Congress set a new ceiling on the number of majors authorized for the Air Service, and reappointed as a captain, then promoted again to major on 1 February 1923. As a major, Spaatz commanded
Kelly Field, Texas, from 5 October 1920, to February 1921, served at
Fort Sam Houston as air officer of the Eighth Corps Area until November 1921, and was commanding officer of the
1st Pursuit Group, first at
Ellington Field, Texas, and later at
Selfridge Field, Michigan, until 24 September 1924. He graduated from the
Air Corps Tactical School,
Langley Field, Virginia, in June 1925, and then served in the Office of the Chief of Air Corps at Washington, D.C. Later that year he testified for the defence at the court-martial of Colonel
Billy Mitchell. From 1 to 7 January 1929, Spaatz along with fellow Air Corps officers, Captain
Ira Eaker and Lieutenant
Elwood Quesada, both of whom would later become senior
United States Army Air Forces (USAAF) generals, established an aviation record by keeping the airplane
Question Mark in the air over the Los Angeles vicinity for over 150 hours. For his efforts he was awarded the Distinguished Flying Cross. From 8 May 1929, to 29 October 1931, Spaatz commanded the
7th Bombardment Group at
Rockwell Field, California, and the 1st Bombardment Wing at
March Field, California, until 10 June 1933. He then served in the Office of the Chief of Air Corps and became chief of the Training and Operations Division. In August 1935, he enrolled in the
Command and General Staff School at
Fort Leavenworth, Kansas, and while there was promoted to lieutenant colonel on 16 September. He graduated in June 1936, and then served at Langley Field on the staff of Major General
Frank M. Andrews, commander of General Headquarters Air Force, until January 1939, when he returned to the Office of the Chief of Air Corps at Washington as assistant executive officer. On 7 November 1939, Spaatz received a temporary promotion to colonel, and during the
Battle of Britain in 1940, spent several weeks in England as a special military observer. This roving assignment when combined with his Teutonic name gave rise to rumors to which he once responded by signing in at a British airbase as "Col. Carl A. Spaatz, German spy." In August, he was assigned in the Office of the Chief of Air Corps, and two months later was appointed assistant to the chief of Air Corps, General Arnold, with the temporary rank of brigadier general. He became chief of the Plans Division of the Air Corps in November 1940, and the following July was named chief of the air staff at
Army Air Forces Headquarters. ==World War II==