In my collection, I have a photo and document grouping of a german, that served a long time, beginning from the 1930´s. He also served in the 5° REI in WW2, marched to China and returned with the "Bataillon de marche/5° REI" in 1946.
One of the photos is a studio portrait, shot in Meknes 1937. It is clearly visible that he wears a uniform with collar patches of the 2° Reg. de Tirailleurs Marocains, although I doubt that he ever did serve in that regiment.
I never understood why. I assumed, that in certain photo studios in these times, uniforms were kept for customers to wear on photos...?
There is also a portrait of the same legionnaire, probably made in the late 1940´s. Like Henri Victor Jouve, he wears a very uncommon uniform.