From what I remember, at the time, the appointment was made by the superior officers, probably by one of the chiefs of military personnel at headquarters in Ottawa, since he is somewhat responsible for official languages. If I remember correctly, the director of official languages sort of reports to him. I believe that's how they designate a resource person who must promote all matters pertaining to official languages. He's called the official languages champion.
On May 26th, 2009. See this statement in context.