that´s Tatra 815 Armax with 26WR45 type of undercarriage. It has Tatra air-cooled (SIC! as all Armax types and all older Tatras in Czech Army), turbocharged V8 engine with direct fuel injection and charged air intercooler. The engine meets EURO II, III and IV emission limits without an electronic fuel injection system (SIC!!! as only one modern engine in the world, so excelent for army using, and it has capability to be adjusted for EURO V if you want) with 300 kW. Of course with patented Backbonetube transmission system and King Frame suspension system, standart Armax with 26WR45 undercarriage has max weight 17000 kg with 255 kW engine, so I guess this one is heavier with 300 kW engine (usual for 8x8 version). You can see that it has tactical tyres 14,00 R20 and standard removal top of cabin, there is add armour around the cabin. Supposedly these Tatras have been made by Tatra, somebody say by SVOS Přelouč, that makes all LR Defenders and Toyotas Hilux for 601.SKSS and SOG.