Which character is likely to be younger based on advice related to becoming a marine?

The character who is likely to be younger and is associated with advice about becoming a marine is Ned. In narratives that involve mentorship or guidance, characters who are younger typically receive advice from older, more experienced individuals. The nature of that advice often reflects the life experiences and lessons learned by the older character, which they pass on to the younger one. This dynamic suggests that Ned is still in a developmental phase where he is absorbing the wisdom imparted to him about military life and the responsibilities of becoming a marine.

The context of the other characters may indicate they are either older or more established in their roles, which further highlights the distinction that makes Ned the probable younger character in this scenario.