Not necessarily - if it had said, "The U.S. Marines," then yes, it would be capitalized because then it's a proper name/noun.
In the drop, it's used as a common noun. The word "marines" has nothing else there to identify the nationality of the marines we're talking about such as U.S. or Martian or Russian or anything else.
So, I will go on record as saying Q got it right in the post.
Not necessarily - if it had said, "The U.S. Marines," then yes, it would be capitalized because then it's a proper name/noun.
In the drop, it's used as a common noun. The word "marines" has nothing else there to identify the nationality of the marines we're talking about such as U.S. or Martian or Russian or anything else.
So, I will go on record as saying Q got it right in the post.