She might have meant, "The Crown."
I can understand an American making that mistake.
I find it very likely that an American can make a mistake. Doesn't make it sound any less ridiculous.
In fact, most Americans (sadly) probably don't know who's in charge of British forces. Most Americans probably couldn't tell you who the Prime Minister of Britain or even Canada are.
That being said, there was a lot of bad blood between the McCain staffers and Palin, so I take anything not on film with a grain of salt.