The supply base at DeValls Bluff (Prairie County) became the major medical center for Union troops serving along the lower White River, many of whom suffered from recurring bouts of malaria and from scurvy

Union hospitals were segregated, and the facilities allocated to soldiers in the U.S. Colored Troops (USCT) were vastly inferior to those used by white soldiers

https://encyclopediaofarkansas.net/entries/hospitals-12614/