If a casualty is unresponsive but breathing, what should be done?

When a casualty is unresponsive but still breathing, placing them in the recovery position is the most appropriate action. This position is specifically designed to maintain an open airway and prevent aspiration in individuals who are unconscious but breathing. By placing the casualty on their side, you reduce the risk of them choking on their own vomit or secretions, which is particularly important given their unresponsiveness.

In addition, this position allows for easier access to the airway should it require any adjustments and keeps the casualty safer until more advanced medical help arrives. It also helps in monitoring their breathing and responsiveness without compromising their safety.

Other options, like leaving them on their back, would be risky due to the potential for airway obstruction, while starting CPR is not necessary if the individual is breathing. Administering oxygen could be beneficial in a clinical setting but is not typically within the immediate scope of a Combat Lifesaver's response in this situation without risk of airway compromise.