My Grandfather, F. Dudley Hobbs, was a second lieutenant in the Lifeguards in France during the First World War, until 31st March 1918, when he was seconded to the R.A.F. and flew Avros.
After the war ended, he remained in Belgium and met Prince Albert (who was to become King George VI years later) and was due to teach him to fly in 1919 on his return to England. Unfortunately my Grandfather contracted scarlet fever, so wasn't able to teach after all.
He did publish a book entitled 'How to fly and instruct on an Avro' and on landing in his godfather's field in England in June that year, met his Danish wife-to-be, staying there with her aunt, who was married to his godfather. It was love at first sight, and they married in 1920.