On FB, I added comments to a group posting of former (& current) Navy CT's and later noted a flurry of comment (as well as camaraderie) to a female Sailor's rebuttal. In short, she took umbrage at sea duty of specific duration (as a crew member or DIRSUP) contributed to one being a Sailor.
I don't believe Marines have any qualms or need justification of their service, duty, or accomplishments. I noted this photo and article of the Assistant Commandant of the Marine Corps. Now he's someone who definitely has the qualities of leadership I'd model myself after.