I remember a story making the rounds about that as well, waaay back.
Its not implausible. The medic training was pretty thorough compared basically any other video game ever, and if all you're really trying to do is stop massive bloodloss ASAP, knowing how to dress a wound and apply a tourniquet absolutely can be the difference between dying before the ambulance arrives and not.
Wasn't it a guy responding to a vehicle accident and he credited America's Army for teaching him about triaging patients? I think it stuck in my mind for the egregious click-baity headline.