] (snip) The problem with writing is that I expect all letters crossed the General's desk first. He probably wouldn't open a letter addressed specifically to his daughter. However, he is of a nature to take a great deal of interest in whatever might be in the letter. I can see him quizzing her about what her brother had to say, and even inviting her to read it out aloud. Just how openly could they communicate under those conditions?

Yes, that is consistent with the General's behavior. I can see him doing just that.

] They might route letters secretly through a third party, but that doesn't seem to be in Eleanor's nature.

But it is in Eleanor's nature, as evidenced by her asking Chatherine to write to a third party to let her know that Catherine made it home.

Thanks, Captain, for the "military" info, otherwise I would remain in ignorance.