18th Regiment, Virginia Cavalry (Confederate)
18th Cavalry Regiment was organized in December 1862. Most of its members had served in the 1st Regiment Virginia Partisan Rangers (subsequently the 62nd Regiment Virginia Infantry). The unit was assigned to Imboden's and W. L. Jackson's Brigade and after participating in the Gettysburg Campaign, skirmished the Federals in western Virginia. Later it served in the Shenandoah Valley and disbanded during April 1865. The field officers were Colonel George W. Imboden, Lieutenant Colonel David E. Beall, and Major Alex. Monroe. 
Companies in this Regiment with the Counties of Origin
Men often enlisted in a company recruited in the counties where they lived though not always. After many battles, companies might be combined because so many men were killed or wounded. However if you are unsure which company your ancestor was in, try the company recruited in his county first.
Surname Company B (Captain George W. Stump's Company) - many men from Hampshire and Hardy Counties -
Surname Company C (Captain Mathias Ginevan's Company) - many men from Hampshire County
Surname Company F (Captain Robert B. Muse's Company) - many men from Frederick and Hampshire Counties
Surname Company H (Captain Francis M. Imboden's Company) - many men from Hardy and Hampshire Counties
Company K (Captain John H. Piles' Company) - many men from Hampshire County
The information above is from 18th Virginia Cavalry, by Roger U. Delauter.
National Park Service, The Civil War Soldiers and Sailors System, is searchable by soldier's name and state. It contains basic facts about soldiers on both sides of the Civil War, a list of regiments, descriptions of significant battles, sources of the information, and suggestions for where to find additional information.
- National Park Service, The Civil War Soldiers and Sailors System, (accessed 6 December 2010).