I think there are considerations at least for those on subs.
Yeah, contrary to tv, pilots (and then astronauts) weren't/aren't tall. The rest of the fly boys it doesn't matter, really, cos even if they're going some place it's usually on a freight/carrier craft.
tall marines: mmm, not necessarily a good thing. They do the most PT in the Corps, at least they used to, and taller is more wear on joints.
And where does the nordic height come from?...all that fish they ate?