Washington's smallpox inoculation credited with aiding Revolutionary War victory

In 1777 George Washington ordered mandatory smallpox inoculation for Continental Army recruits and enforced quarantines, according to National Park Service documents. Washington adopted variolation, having soldiers intentionally inoculated with live material and isolated while they recovered to prevent wider spread. Smallpox killed more Continental soldiers than combat during the Revolutionary War, and previous outbreaks repeatedly incapacitated units and hindered operations. Systematic inoculation reduced the risk of crippling epidemics and preserved the army's operational readiness for subsequent campaigns.