You have english in the pre-selection process (grammar, vocabulary, pronunciation, it's a Multiple choice questions (I don't know if it's the good translation), with negative points for bad answers). It's still pretty important if you go all the way to the interviwe, cause they look carefully at the result, especially in case they hesitate.
Then you have an english test, but only once you have been accepted in the cadet program, but as far as I've been bounced at the interviews, I don't know much about it.