The RAF Dental Branch seems make a habit of it. In addition to the two previous examples there were 'Pop' Morley who gained a DFM as an air gunner and then became a dental hygienist and 'Pop' Newton who qualified as a Lanc pilot just as the war finished and later joined as Dent Admin (both were nicknamed 'Pop' because they were a little bit older. Both wore their brevet with pride.
We also had a Cpl in the Branch called Alf Holham who was awarded the MM and BEM whilst a Warrant Officer in the 'Glorius Glosters' in Korea. He also used to wear a blue/purple medal ribbon above his Cpl stripes which was an award by the Americans for his work in the Korean POW camps. Alf never did parades because he out-medalled any reviewing officer.