summsi,
The Artizan Goumiers would be good for WW2, particularly for the Italian campaign. But they are almost all wearing either British or French steel helmets, when they should be wearing either bush hats (as you say), turbans, or US steel helmets.
For my North Africans, I took the "easy" way out by commissioning someone to kit-bash some figures. The figures below started out as Warlord US Marines, with TAG weaponry, and greenstuff for the coats and headscarves. Another option I was thinking of (but never tried) was to use Warlord US winter infantry, replacing the heads with Empress bush hats. The Northern Tokin hills can get cold at night, and I've seen plenty of pictures of North Africans bundled up against the weather.
Hope this is of help.
Tim