| Unit Name: | 40th Field Artillery Regiment |
| Dates: | 1918 |
| Branch: | Army |
| Type: | Field artillery |
| Garrison Label: | Home station |
| Motto: | ALL FOR ONE |
| Identification Symbol Label: | Distinctive unit insignia |
The 40th Field Artillery Regiment is a field artillery regiment of the United States Army, first Constituted 5 July 1918 in the National Army (USA).
Constituted 5 July 1918 in the National Army as the 40th Field Artillery and assigned to the 14th Division
Organized 10 August 1918 at Camp Custer, Michigan
Demobilized 6 February 1919 at Camp Custer, Michigan
Reconstituted 1 October 1933 in the Regular Army the 40th Field Artillery
Activated 4 June 1941 at Camp Roberts, California
Regiment broken up 1 March 1943 and its elements reorganized and redesignated as follows:
Headquarters and Headquarters Battery as Headquarters and Headquarters Battery, 40th Field Artillery Group1st and 2d Battalions as the 974th and 975th Field Artillery Battalions, respectively
After 1 March 1943, the above units underwent changes as follows:
Headquarters and Headquarters Battery, 40th Field Artillery Group, inactivated 15 March 1946 in GermanyActivated 26 April 1951 at Camp Carson, ColoradoRedesignated 9 September 1957 as Headquarters and Headquarters Battery, 40th Field Artillery Missile GroupRedesignated 20 July 1958 as Headquarters and Headquarters Battery, 40th Artillery GroupInactivated 16 September 1962 in Germany
974th Field Artillery Battalion inactivated 10 January 1946 at Camp Patrick Henry, VirginiaRedesignated 5 February 1947 as the 509th Field Artillery BattalionRedesignated 25 June 1948 as the 509th Armored Field Artillery Battalion and assigned to the 3d Armored DivisionActivated 30 July 1948 at Fort Knox, KentuckyInactivated 1 October 1957 in Germany and relieved from assignment to the 3d Armored Division
975th Field Artillery Battalion inactivated 13 February 1946 at Camp Kilmer, New JerseyRedesignated 5 February 1947 as the 510th Field Artillery BattalionActivated 1 February 1949 in AustriaRedesignated 20 August 1956 as the 510th Field Artillery Rocket BattalionInactivated 1 June 1958 in Italy
Headquarters and Headquarters Battery, 40th Artillery Group; 509th Armored Field Artillery Battalion; and the 510th Field Artillery Rocket Battalion consolidated, reorganized, and redesignated 16 September 1962 as the 40th Artillery, a parent regiment under the Combat Arms Regimental System
Redesignated 1 September 1971 as the 40th Field Artillery
Withdrawn 16 September 1987 from the Combat Arms Regimental System and reorganized under the United States Army Regimental System with headquarters in Germany
Transferred 15 January 1996 to the United States Army Training and Doctrine Command
A Gold color metal and enamel device NaNinches in height overall consisting of a shield blazoned: Gules, a dexter arm embowed in armour, the upper part in fess grasping a Lochaber axe fesswise Or. Attached below and to the sides of the shield a Gold scroll inscribed “ALL FOR ONE” in Black letters.
The shield is red for Artillery. The arm in the striking position signifies the readiness of the organization.
The distinctive unit insignia was originally approved for the 40th Field Artillery Regiment on 9 March 1942. It was redesignated for the 509th Armored Field Artillery Battalion on 9 March 1950. It was redesignated for the 40th Artillery Regiment on 20 November 1958. The insignia was redesignated for the 40th Field Artillery Regiment effective 1 September 1971.