The 2nd Regiment Arkansas Volunteer Cavalry (1862-1865) was a cavalry

Cavalry

Cavalry or horsemen were soldiers or warriors who fought mounted on horseback. Cavalry were historically the third oldest and the most mobile of the combat arms...

 regiment

Regiment

A regiment is a major tactical military unit, composed of variable numbers of batteries, squadrons or battalions, commanded by a colonel or lieutenant colonel...

 that served in the Union Army

Union Army

The Union Army was the land force that fought for the Union during the American Civil War. It was also known as the Federal Army, the U.S. Army, the Northern Army and the National Army...

 during the American Civil War

American Civil War

The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

. Although Arkansas

Arkansas

Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River...

 joined the Confederate States of America

Confederate States of America

The Confederate States of America was a government set up from 1861 to 1865 by 11 Southern slave states of the United States of America that had declared their secession from the U.S...

 in 1861, not all of its citizens supported secession. Arkansas formed some 48 infantry regiments to serve in the Confederate Army, but also formed another 11 regiments that served in the Union Army

Union Army

The Union Army was the land force that fought for the Union during the American Civil War. It was also known as the Federal Army, the U.S. Army, the Northern Army and the National Army...

.

The 2nd Arkansas Cavalry was organized at Helena, Arkansas

Helena, Arkansas

Helena is the eastern portion of Helena-West Helena, Arkansas, a city in Phillips County, Arkansas. As of the 2000 census, this portion of the city population was 6,323. Helena was the county seat of Phillips County until January 1, 2006, when it merged its government and city limits with...

 and Pilot Knob, Missouri

Pilot Knob, Missouri

Pilot Knob is a city in Iron County, Missouri, United States. The population was 697 at the 2000 census. It lies eight miles south of Belgrade and thirteen miles east of Centerville.-History:...

and mustered into Federal service in July, 1862. The regiment was mustered out August 20, 1865.