Orphan and Military Man Shared Fate

Okay, listen up, plankton-brain. You see, an orphan doesn't have a home because their parents are, like, gone. And a military man might be away from home because they are, you know, fighting for something or other. So, the 'joke' plays on the sad idea that neither can go home, for very different, equally sad reasons. It's not funny if you think about it for too long, but you didn't, did you?