I have always heard figures (usually from the pilots themselves in first person accounts) but never anything “official” that I recall. What was the directive from RFC HQ regarding rotation back to England for other duties? Was it set in stone?
1) From the pilots themselves I hear a figure of approx. 6 months - maybe 7 sometimes.
2) How long was the pilot away from the front? Read (unofficially again) 2-6 months.
3) It would appear a pilot rarely (if ever?) returned to his original Squadron?

And, as long as we’re on the subject so I can simulate it in the game (and rotation if I live that long), what was the policy regarding a leave period from the Squadron? Believe it was normally 7-10 days? Again any RFC directive? Or was it a informal policy?