We don’t set our style rules by plebiscite, but the old rules put us at odds with the preferred usage of people and organizations directly involved. And we heard repeatedly from readers and sources who found our usage puzzling or ill-informed — even, in the case of “marines,” disrespectful. We’ve assured current and former members of the Marine Corps that the old rule reflected not a lack of respect but rather a desire for consistency. We don’t, for example, capitalize “soldier” in referring to an individual member of the Army, and it seemed inconsistent to refer to “three soldiers and two Marines” in the same context.
But the “consistency” argument can cut both ways, depending on the frame of reference. If the term for an individual member is the same as the proper name of the organization, why not capitalize “Marine” just as we capitalize “Democrat,” “Catholic” or “Rotarian”? The new rule also makes us consistent with The Associated Press and many other news organizations — a particularly important consideration now, when readers get news online from so many sources.