The signing of the armistice in November 1918 did not halt training at March Field.
Initially March was used by several Air Service squadrons that returned from France:
9th Aero Squadron: 22 July – 2 August, 15 November – 11 December 1919
19th Aero Squadron: 1 October – 29 June 1921
23rd Aero Squadron: 1 October 1921 – 21 March 1922
On 13 December 1919, the United States House of Representatives passed an appropriations bill for $9.6 million for the purchase of additional land at military camps “which are to be made part of the permanent military establishment.”
March Field was allocated $64,000 of this amount.

However, by 1921, the decision had been made to phase down all activities at the base in accordance with sharply reduced military budgets.
By the spring of 1923, March Field was deactivated as an active duty airfield, however, and a small caretaker unit was assigned to the facility for administrative reasons.
It was used by the aerial forestry patrol.
It also was used intermittently to support small military units.

March Field remained quiet for only a short time.
In July 1926, Congress created the Army Air Corps and approved the Army's five-year plan which called for an expansion in pilot training and the activation of tactical units.
Accordingly, funds were appropriated for the reopening of March Field in March 1927.

Colonel William C. Gardenhire, assigned to direct the refurbishment of the base, had just directed his crews to replace underpinnings of many of the previous buildings when he received word the future construction would be in Spanish Mission architectural design.
In time, March Field would receive permanent structures.
The rehabilitation effort was nearly complete in August 1927, when Major Millard F. Harmon reported in to take over the job of base commander and commandant of the flying school.
Classes began shortly after his arrival.
The 13th School Group and its 47th and 53rd School Squadrons provided primary and basic flying training for future Air Force leaders such as Hoyt Vandenberg, Nathan Twining, Thomas Power and Curtis LeMay.

As March Field began to take on the appearance of a permanent military installation, the base's basic mission changed.
When Randolph Field began to function as a training site in 1931, March Field became an operational base.
Before the end of the year, the 7th Bombardment Group, commanded by Major Carl A. Spaatz, brought its Curtiss B-2 Condor and Keystone B-3A bombers to the airfield.
The activation of the 17th Pursuit Group and several subordinate units along with the arrival of the 1st Bombardment Wing initiated a period where March Field became associated with the Air Corps' heaviest aircraft as well as an assortment of fighters.
Aircraft on March's flightline in the 1930s included Keystone B-4, Martin B-10/B-12 and Douglas B-18 Bolo bombers; Boeing P-12, P-26 Peashooter, and Curtiss P-36 Hawk pursuit aircraft; Northrop A-17A dive bombers and Douglas O-38 observation aircraft.

In the decade before World War II, March Field took on much of its current appearance and also began to gain prominence.
Lieutenant Colonel Henry H. (Hap) Arnold, base commander from 1931 to 1936, began a series of well-publicized maneuvers to gain public attention.
This resulted in a visit by Governor James Rolph in March 1932, numerous visits by Hollywood celebrities including Bebe Daniels, Wallace Beery, Rochelle Hudson and others, and visits by famous aviators including Amelia Earhart.
Articles in Los Angeles newspapers also kept March Field in the news and brought to it considerable public attention.
The completion of the first phase of permanent buildings in 1934 added to the scenic quality of the base.
The signing of the armistice in November 1918 did not halt training at March Field. Initially March was used by several Air Service squadrons that returned from France:
9th Aero Squadron: 22 July – 2 August, 15 November – 11 December 1919
19th Aero Squadron: 1 October – 29 June 1921
23rd Aero Squadron: 1 October 1921 – 21 March 1922
On 13 December 1919, the United States House of Representatives passed an appropriations bill for $9.6 million for the purchase of additional land at military camps “which are to be made part of the permanent military establishment.” March Field was allocated $64,000 of this amount.
However, by 1921, the decision had been made to phase down all activities at the base in accordance with sharply reduced military budgets. By the spring of 1923, March Field was deactivated as an active duty airfield, however, and a small caretaker unit was assigned to the facility for administrative reasons. It was used by the aerial forestry patrol. It also was used intermittently to support small military units.
March Field remained quiet for only a short time. In July 1926, Congress created the Army Air Corps and approved the Army's five-year plan which called for an expansion in pilot training and the activation of tactical units. Accordingly, funds were appropriated for the reopening of March Field in March 1927.
Colonel William C. Gardenhire, assigned to direct the refurbishment of the base, had just directed his crews to replace underpinnings of many of the previous buildings when he received word the future construction would be in Spanish Mission architectural design. In time, March Field would receive permanent structures. The rehabilitation effort was nearly complete in August 1927, when Major Millard F. Harmon reported in to take over the job of base commander and commandant of the flying school. Classes began shortly after his arrival. The 13th School Group and its 47th and 53rd School Squadrons provided primary and basic flying training for future Air Force leaders such as Hoyt Vandenberg, Nathan Twining, Thomas Power and Curtis LeMay.
As March Field began to take on the appearance of a permanent military installation, the base's basic mission changed. When Randolph Field began to function as a training site in 1931, March Field became an operational base. Before the end of the year, the 7th Bombardment Group, commanded by Major Carl A. Spaatz, brought its Curtiss B-2 Condor and Keystone B-3A bombers to the airfield. The activation of the 17th Pursuit Group and several subordinate units along with the arrival of the 1st Bombardment Wing initiated a period where March Field became associated with the Air Corps' heaviest aircraft as well as an assortment of fighters. Aircraft on March's flightline in the 1930s included Keystone B-4, Martin B-10/B-12 and Douglas B-18 Bolo bombers; Boeing P-12, P-26 Peashooter, and Curtiss P-36 Hawk pursuit aircraft; Northrop A-17A dive bombers and Douglas O-38 observation aircraft.
In the decade before World War II, March Field took on much of its current appearance and also began to gain prominence. Lieutenant Colonel Henry H. (Hap) Arnold, base commander from 1931 to 1936, began a series of well-publicized maneuvers to gain public attention. This resulted in a visit by Governor James Rolph in March 1932, numerous visits by Hollywood celebrities including Bebe Daniels, Wallace Beery, Rochelle Hudson and others, and visits by famous aviators including Amelia Earhart. Articles in Los Angeles newspapers also kept March Field in the news and brought to it considerable public attention. The completion of the first phase of permanent buildings in 1934 added to the scenic quality of the base.
March Air Reserve Base