If I may allow myself to be included in this discussion, I would like to point out that:
1) the doctors were exclusively officers and wore the gray-green uniform like the other officers of the Royal Army.
2) Nurses and paramedics wore the normal gray-green uniform of the troop or non-commissioned officers of the Royal Army.
3) for all there was the addition of the band with the red cross on the left arm.
4) However, a distinction must be made especially for officers who had a different uniform depending on the period:
From 1934 to 1940 the doctor's gray-green gabardine uniform (model 34) had the collar adorned with blood red velvet, as well as the bands of the trousers and degrees on the sleeve. The buttons were gold with the symbol of Health and the shoulder straps had the friezes of Health. With the beginning of the war in 1940, the gabardine uniform was transformed (model 40) '' lowering the tone of the colors '', thus eliminating the red collar, the shoulder pads and the golden buttons. The straps became fixed and gray-green and the buttons brown. The pants were not supposed to have the black / red bands but very often they were not removed. This is the uniform that is defined as '' suitable for wartime '' as the '' war '' uniform had to be the one in green officer's cloth but which was often not supplied and the one in gabrdine was used with the modifications said before.