Re: '300 years ago' , in this film's context, was the 1950s!
^ The person, yes. The country, no. Just because Archer's granddaddy was from the US (assuming he actually was, which is not certain by any means), doesn't have anything to do with where the actual fighting was.
It is by caffeine alone I set my mind in motion. It is by the beans of Java that thoughts acquire speed, the hands acquire shakes, the shakes become a warning. It is by caffeine alone I set my mind in motion.