I have found a site with several of the missing photos.
You can also show the 20 most recent or an alphabetical list.

spokesman-review

I noticed that the first two missing photos in the A's were both there. I don't know how many others they have but it seems like a good reference.

The site iraq.pigstye.net shows the following:

Individuals US (2290)
Individuals GB (91)
Individuals Denmark (2)
Individuals Spain (18)
Individuals Italy (28)
Individuals Bulgaria (8)
Individuals Thailand (1)
Individuals Estonia (2)
Individuals Ukraine (9)
Individuals El Salvador (2)
Individuals Netherland (2)
Individuals Latvia (1)
Individuals Slovakia (1)
Individuals Hungary (1)
Individuals Australia (1)
Individuals Kazakhstan (1)
Individuals Poland (11)

fallen-coalition-heroes.com seems to have the most photos from what I can tell.