I know the uk’s submarine branch is assosiated with the jolly roger as they weren’t recognized as legal warships in the great but not final war and thus weren’t allowed to fly the jack. Looked it up for the US, turns out its a carrier fighter wing (which makes sense looking at the detailing on today’s uniforms). https://en.m.wikipedia.org/wiki/VFA-103 They fly Super Hornets, and look I hate the military industrial complex more than most. But fighter jets, and specifically naval fighter jets, are cool af.