Apparently some US Marines (present and past) have their khakis in a wad by the "pussification" of their branch of the service by Political Correctness Gone Mad, as the Marine Corps (which now technically allows both men and women to serve in all roles) pursues more gender-neutral language for job descriptions — mostly by substituting the word "Marine" for where "Man" was previously used.
Of course, I haven't noticed that Policemen and Firemen became any less heroic or brave or respected upon becoming Police Officers and Fire Fighters. But maybe they're less into titles and similar fripperies than these Marines are.
The Marines just took ‘man’ out of 19 job titles, and people are losing their minds
The title changes are just one more friction point on the long road to gender integration.
Changing "man" to marine only makes the title sounds cooler. Also, fire fighter is still a bad ass title.