How is that different than attempting to trademark ‘United States Marines’
It’s not, and the application will almost certainly be rejected just like an application to trademark “United States Marines” would be...
All I can say is try wearing anything with USMC on it and not be a Marine.
Like the Hells Angels, the Marines wont tolerate any fakers who buy the colors and sew it on a jacket. If a person does, expect to be called on it if caught.
Disney has no respect for anything American.