Who are These Strange Looking Chaps?

These strange looking chaps arrived in camp last year, fully uniformed and equipped.  I came across them at a local wargame convention, and they were in a 'lot' of old figures that I purchased. 

Can anyone identify who they are? 

They have formed a defensive square to ward off comments about the odd color of their uniforms.

Their uniform is painted rather oddly, as if it was first painted red, then had yellow layered over it to make an orange (or faux light brown)?  Are they Cacadores (though the below uniform plate does not show a red 'vest" or white cross-belts)?  

They appear to be holding rifles (no bayonets).

The Officer with the yellow plume has what appears to be 9099 (or 6066) on the underside of his base.  The rest are covered in glue and paper that I will have to remove.  

Do you recognize the figures or the manufacturer?  

Please leave a comment below if you have any information on these odd little fellows.