WWII Ribbons

[Ron Nash]

I have a general question about WWII ribbons. I believe that they are supposed to be displayed above the left chest pocket, in order of prestige, left to right. My question is this: If a soldier was awarded more than one medal, ex: 2 purple hearts, would that soldier wear two purple ribbons to signify the two purple hearts or would the soldier just wear one ribbon representing both awards? Also could a soldier earn more than one of the same campaign medal, ex 2 European/African/Middle eastern Campaign Medals?

Thanks

Brian