What you will get: The tank model with its wheels, tread, body, and rocket launchers as separate moveable parts. I have tested the FBX file in Unity.
Each .zip contains the model, textures, and rendered images.
This model was made using Blender 2.8 - so to recreate the exact images you will need to use this version of Blender.
Blender users only: Two Blender files have been included in the .zip file. rocketTank_RenderSetup.BLEND contains the sets (lighting etc.) for recreating the preview images. I have also included just the basic rocketTank.BLEND file to use if the tank model and textures are all you will need. The node setup is included in the Blender files, but the textures will need to be reloaded or the model will appear purple in render mode.
If you want to get the same rendered images as I did, I used a free HDRI, noon-grass, from HDRIHaven.