Now let's muddy the waters again! What about Legions?! It is my understanding that a legion consisted of it's own infantry, cavalry, and artillery units, allowing the Legion to operate more or less independently. In practice, of course, the different units were often on detached duty with other infantry, cavalry, or artillery units. For instance, The Hampton Legion South Carolina Volunteers was organized June 12, 1861 with an Infantry Battalion of eight companies, A through H; a Cavalry Battalion of four companies, A through D, and an Artillery battalion of two companies, A and B.

On August 22, 1862, the cavalry Battalion was assigned to 2nd Regiment of South Carolina Cavalry. The Artillery battalion became separate and independent companies sometime prior to August 25, 1862; Company A became Hart’s Company, Horse Artillery, South Carolina, and Company B became Bachman’s Company, South Carolina Artillery.

The eight infantry companies of the Hampton legion were assigned to Hood’s Texas Brigade immediately following the Battle of Seven Pines (May 31-June 1, 1862). These South Carolina companies fought with Texas Brigade in the battles of Second Manassas (August 30, 1862); Boonsboro (September 14, 1862), Sharpsburg (September 17, 1862). In mid-November, 1862, when the Army of Northern Virginia was recognized, the South Carolina infantry of Hampton’s Legion was transferred to Brig-General Micah Jenkin’s Brigade, Also, at the time the eight companies were augmented by companies I through K (13th Battalion, South Carolina Infantry) to form a regiment.

In the Spring of 1864, this South Carolina Infantry Regiment was mounted and transferred to the cavalry service. It was paroled at Appomattox, April 12, a865 as "Hampton’s Legion Mounted Infantry, South Carolina Volunteers." Source: Hood’s Texas Brigade: A Compendium page 397

Now, is that clear? LOL Stan