200th Infantry Regiment (United States)

200th Infantry Regiment
Coat of arms
Active	1880
Country	USA
Branch	Army
Type	Air defense artillery
Motto(s)	"Pro Civitate et Patria" (For state and country)
Branch color	Scarlet
Mascot(s)	Oozlefinch

The 200th Coast Artillery (AA) (200 CA) was a United States Army unit during the first half of World War II. Today descendant elements serve with the New Mexico Army National Guard as the 200th Infantry.

The 200th was originally organized 1 September 1880 in the New Mexico volunteer Militia in west-central New Mexico from independent companies as the 1st Regiment. It was expanded 18 February 1882 to form the 1st Regiment with headquarters at Socorro and the 2nd Regiment with headquarters at Albuquerque.

The 1st Regiment was expanded 25 April 1883 to form the 1st Regiment and the 2nd Cavalry Battalion (1st Regiment; hereafter, separate lineage). 2nd Cavalry was reorganized and redesignated 14 September 1883 as the 1st Regiment of Cavalry (less 3rd Battalion; see below). It was reorganized 10 November 1885 as the 1st Regiment of Cavalry. It was disbanded 29 December 1893 and two remaining troops attached to the 1st Regiment of Infantry. The unit was reorganized 12 September 1896 in the New Mexico Volunteer Militia as the 1st Battalion of Cavalry with headquarters at Santa Fe. (New Mexico Volunteer Militia redesignated 17 March 1897 as the New Mexico National Guard.) The unit was redesignated in 1897 as the 1st Squadron of Cavalry. While remaining in state service the 1st Squadron of Cavalry additionally formed the 2nd Squadron, 1st United States Volunteer Cavalry, also known as the "Rough Riders" (mustered into federal service 6–7 May 1898 at Santa Fe; mustered out of federal service 15 September 1898 at Montauk Point, New York). Troop A attached 5 February 1908 to the 1st Regiment of Infantry (see below); remainder of squadron concurrently disbanded.

The 2nd Regiment was expanded 25 April 1883 to form the 2nd Regiment and the 1st Cavalry Battalion. The 2nd Regiment was redesignated 10 November 1885 as the 1st Regiment of Infantry with headquarters at Santa Fe. Location of Headquarters was changed 16 August 1886 to Albuquerque.

The 1st Cavalry Battalion was reorganized and redesignated 14 September 1883 as the 3rd Battalion, 1st Regiment of Cavalry. The unit was expanded, reorganized and redesignated 10 November 1885 as the 2nd Regiment of Cavalry.

The 1st Regiment of Infantry and elements of the 2nd Regiment of Cavalry were consolidated 24 December 1890 and consolidated unit designated at the 1st Regiment of Infantry. 1st Regiment of Infantry was consolidated in 1909 with Troop A (see above) and consolidated unit designated as the 1st Regiment of Infantry. The unit was mustered into federal service 21 April 1917 and its elements reorganized and redesignated as elements of the 115th Train Headquarters and Military Police and the 143rd and 144th Machine Gun Battalions, elements of the 40th Division.