xNormal™ is a free app to bake texture maps ( like normal maps and ambient occlusion ). This is really to use with Photoshop.
https://xnormal.net
gkabs.net and gulfknights.net are sites for Military 3d model using 3d max for PC games like thirdwire flight simulator and community like combatace. Free download 3d models of flight jet, MBT, Tank, Ship, Ground units.