According to the Medical and Surgical History of the war of the rebellion:

“In the Confederate armies the cornus florida or dogwood was used in some instances instead of quinine as a prophylactic. Circular No. 12, issued from their Purveyor’s Office August 22, 1862, refers to an arrangement by which whiskey medicated with dogwood and other indigenous barks was to be used by the troops as a protective against malaria. Dr. Joseph Jones reports that this compound tincture was issued by the purveyors to troops serving in swampy districts and was employed with good effect in preserving them from malarial fevers.”