Evelyn, here are the companies and their regiments --

Hempstead Cavalry, Co. H, 2nd Arkansas Mounted Rifles.
Hempstead Hornets, Co. B, 4th Arkansas Infantry.
Hempstead Legion, Co. A, 20th Arkansas Infantry.
Hempstead Plough Boys, Co. E, 20th Arkansas Infantry.
Hempstead Rifles, Co. A, 2nd Arkansas State Troops.
Hempstead Rifles No. 2, Co. H, 17th Arkansas Infantry.