I have shown the four classes of the 1940-1944 award I have :
1-Knight
2-Officer
3-Commander
4-Grand Cross
The reverse of the Grand Cross is plain whilst the other 3 have identical reverses to that of the obverse cross element.
The commander version is slightly different to those usually seen in that it appears to have been coloured by the recipient(?) and instead of the usual tie style of ribbon it has been stitched together using a piece of the first style ribbon, as on the Knight version.
Here is a link in relation to the Association:
https://anfb.blog4ever.com/les-medailles-de-l-anfb