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2nd Battalion - 138th Field Artillery

The 2/138th Field Artillery Battalion was constituted 21 January, 1839 in the Kentucky Militia as the Louisville Legion and organized at Louisville, Kentucky. Mustered into Federal service 17 May, 1846 as the 1st Kentucky Volunteer Infantry Regiment; mustered out of Federal Service 17 May, 1847 at New Orleans, Louisiana. Reorganized 30 June, 1851 in the Kentucky Volunteer Militia at Louisville, Kentucky as the Louisville Legion. Reorganized 7 May, 1860 in the Kentucky State Guard as the 1st Infantry Regiment (Louisville Legion) to consist of the Louisville Battalion and Marion Rifle Battalion. 1st Infantry Regiment reorganized in July 1861, at Camp Joe Holt, Indiana, with men of Union sympathy, as the 3rd Kentucky Volunteer Infantry Regiment (Louisville Legion). Mustered into Federal service 9 September, 1861 as the 5th Kentucky Volunteer Infantry Regiment (Louisville Legion); mustered out of Federal service in September, 1864 at Louisville, Kentucky. Reorganized 15 October, 1878 in the Kentucky State Guard at Louisville, Kentucky as the 1st Battalion (Louisville Legion). Expanded, reorganized, and redesignated in 1883 as the 1st Kentucky Volunteer Infantry (Louisville Legion). Mustered into Federal service 1 - 10 June, 1898 at Lexington, Kentucky as the 1st Kentucky Volunteer Infantry; mustered out of Federal service 24 February, 1899 at Louisville, Kentucky.

Reorganized 31 July, 1899 in the Kentucky State Guard at Louisville, Kentucky as the 1st Regiment of Infantry (Louisville Legion). Mustered out of state service 27 November, 1900 at Louisville, Kentucky. Reorganized 27 May, 1904 in the Kentucky State Guard at Louisville, Kentucky as the 1st Regiment of Infantry (Louisville Legion). (Kentucky State Guard redesignated 19 March, 1912 as the Kentucky National Guard). Mustered into Federal service 25 June, 1916 at Fort Thomas, Kentucky. (Company A mustered out of Federal service in February, 1917 at Fort Thomas, Kentucky; mustered into Federal service 8 May, 1917 at Camp Stanley, Kentucky). Drafted into Federal service 5 August, 1917.

Converted and redesignated 9 October, 1917 as the 138th Field Artillery and assigned to 38th Division. Demobilized 8 January, 1919 at Camp Zachary Taylor, Kentucky. Reorganized 1921-1922 in the Kentucky National Guard at Louisville, Kentucky as the 138th Field Artillery and assigned to the 38th Division; Headquarters Federally recognized 30 June, 1922 at Louisville, Kentucky. Inducted into Federal service 17 January, 1941 at Louisville, Kentucky. Antiaircraft and Antitank Platoons of Headquarters Batteries, 1st and 2nd Battalions, consolidated, converted and redesignated 15 December, 1941 as Company A, 638th Tank Destroyer Battalion, and relieved from assignment to the 38th Division.

Regiment broken up 1 march, 1942 and its elements reorganized and redesignated as follows. Headquarters and Headquarters Battery disbanded. 1st Battalion as the 138th Field Artillery Battalion, an element of the 38th Infantry Division. 2nd Battalion as the 198th Field Artillery Battalion and relieved from assignment to 38th Infantry Division. After 1 March, 1942 the above units underwent changes as follows. 138th Field Artillery Battalion inactivated 1 November, 1945 at Camp Anza, California. Relieved 13 May, 1946 from assignment to the 38th Infantry Division. Reorganized and Federally recognized 24 September, 1946 at Louisville, Kentucky. 198th Field Artillery Battalion inactivated 21 January, 1946 at Camp Anza, California. Reorganized and Federally recognized 4 November, 1947 at Louisville, Kentucky. Ordered into active Federal service 1 May, 1951 at Louisville, Kentucky. (198th Field Artillery Battalion [NGUS] organized and Federally recognized 1 May, 1953 with Headquarters at Louisville, Kentucky). Released 2 December, 1954 from active Federal service and reverted to state control; Federal recognition concurrently withdrawn from the 198th Field Artillery Battalion [NGUS]. Company A, 638th Tank Destroyer Battalion, inactivated 7 November, 1945 at Fort Benning, Georgia. Expanded, converted and redesignated 5 August, 1946 as the 452nd Field Artillery Battalion. Reorganized and Federally recognized 4 November, 1947 at Louisville, Kentucky. Reorganized and redesignated 1 September, 1949 as the 452nd Armored Field Artillery Battalion. Ordered into active Federal service 11 September, 1950 at Louisville, Kentucky. (452nd Armored Field Artillery Battalion [NGUS] organized and Federally recognized 21 September, 1952 with Headquarters in Louisville, Kentucky).

Released 17 January, 1955 from active Federal service ans reverted to state control; Federal recognition concurrently with drawn from the 452nd Armored Field Artillery Battalion [NGUS]. 138th and 198th Field Artillery Battalions and the 452nd Armored Field Artillery Battalion consolidated 1 October, 1959 with Headquarters, 138th Field Artillery ( reconstituted 25 August, 1945 in the Kentucky National Guard), 441st and 623rd Field Artillery Battalions, and the 640th Field Artillery Battalion (organized and Federally recognized 1 May, 1955 with Headquarters at Lexington, Kentucky) and consolidated unit reorganized and redesignated as the 138th Artillery, a parent regiment under the Combat Arms Regiment System, to consist of the 1st, 2nd, 3rd, and 4th Howitzer Battalions, 5th Observation Battalion, and Battery A.

Reorganized 1 September, 1961 to consist of the 1st, 2nd, 3rd, and 4th Howitzer Battalions, 5th Target Acquistion Battalion, and Battery A. Reorganized 1 December, 1965 to consist of the 1st, 2nd, 3rd, and 4th Howitzer Battalions, 5th Battalion, and Battery A. Reorganized 1 March, 1966 to consist of the 1st, 2nd, 3rd, and 4th Howitzer Battalions, 5th Battalion, and Batteries A and F. Reorganized 1 February, 1968 to consist of the 1st, 2nd, and 3rd Howitzer Battalions, 5th Battalion, and Batteries A and F. Reorganized 1 March, 1968 to consist of the 1st and 2nd Howitzer Battalions, 4th and 5th Battalions, and Batteries A and F. Reorganized 1 may, 1968 to consist of the 2nd, 4th, and 5th Battalions and Battery A. (2nd Battalion, 138th Field Artillery ordered into active Federal service 13 May, 1968 at home stations). Reorganized 1 May, 1969 to consist of the 2nd and 5th Battalions and Battery A. (2nd Battalion, 138th Field Artillery released 24 October, 1969 from active Federal service and revcerted to state control). Redesignated 1 March, 1972 as the 138th Field Artillery.

Reorganized 1 May, 1974 to consist of the 2nd Battalion. Reorganized 1 November, 1980 to consist of the 2nd Battalion, an element of the 149th Separate Armored Brigade. Reorganized 1 November, 1985 to consist of the 2nd Battalion, an element of the 35th Infantry Division. Withdrawn 1 June, 1989 from Combat Arms Regimental System and reorganized under the United States Army Regimental System.



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