HU, IT, PT, RU additions. Minor corrections Multi.

Added Hungarian, Portuguese, Italian entries so they at least have the realistic-ish names and Russian folks have the names wrote in Cyrillic, as far as I have been able to find them on Wiki.

> Please note that I'm not fluent in these language, I just assume that's at least more enjoyable than plain English. <

Minor corrections to harmonize other languages.

Notes:
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* AMV-7 Marshall looks actually closer to a Rosomak built by KTO to me, since " The Polish version features major changes from the original Patria AMV, such as the ability (...) to swim through water obstacles." thanks to its propellers while the Patria AMV have none.
Marshal: http://ttp3.dslyecxi.com/img/ttp3_276.jpg
Rosomak: http://upload.wikimedia.org/wikipedia/commons/thumb/c/c0/KTO_Rosomak_z_10_BKPanc_%2801%29.jpg/800px-KTO_Rosomak_z_10_BKPanc_%2801%29.jpg
AMW: http://maquettegarden.free.fr/Vehicules/Patria%20AMV/images/Patria%20AMV%2006.jpg

* "KamAZ" is the manufacturer, while 4310 is the model. 
IMHO, we should rename it "4310" whatever how weird it may feel, as you did with the Otokar "Arma", for accuracy's sake.
I'm gonna propose another version with 4310 instead of KamAZ, it will be your call then.

*M2A1 Slammer looks to be a Merkava Mk 4m Windbreakern which is "a Merkava Mk IV equipped with the Trophy active protection system (APS)".
http://en.wikipedia.org/wiki/Merkava#Mk_IVm_Windbreaker
As for Arabic numeral vs roman, well, I simply took a look at the Hebrew wikipedia.
No; please keep the original