This hat can be used as custom item for Minifigs and contains 20 pieces of the same type (French Shako) It's modelled according to pictures of french soldiers of the Napoleoic wars. Since that type was widely used it can be used for a lot of unit of other nations too.
For uniforms take a look at my facebook uniform reference guide.
You can find usefull decals on:
(Please beware: only the custom item(s) is/are included but no Minifgs)
Concerning trademark please take a look on the shop entry page.