Which preposition to use with carlists

at Occurrences 1%

All the world knows that you are a Carlist at heart.

over Occurrences 1%

There were Carlists over the mountains on either side of the valley.

with Occurrences 1%

It is an open secret that Pacheco will go over to the Carlists with his whole army corps for cash downbut he will not take a promise.

Which preposition to use with  carlists