The recruiters line about what knives he uses

I just caught the tail end of this movie on HBO today before I went in to work. I heard the recuriter talking to the kid at the table about how to bring down something with his knives. I'm not sure if the recruiter was talking about hunting with a knife, or about making a combatant kill. Can anyone clarify if this is a discussion, that the recruiter has with the kid before his wedding, about bringing down an animal, or a human. Just wasn't sure as to the context, since I caught the end of the conversation.