I'm going to criticize this form a Military point of view...let's start off with the uniforms, which are the wrong desert pattern, the one used is the old "chocolate chip" dessert storm pattern, the one in use now is the three color pattern, next the rank on the driver's collar, the rank is wrong, it should be an enlisted man driving the tank, either a Private or Specialist, further more if he is the "tank commander" he should be on the left side hatch of the turret, not the driver's hatch, and it would not be a full Colonel, but a Lieutenant or Captain. Tank crews do not wear body armor, because of the restricted space, and the helmet is wrong (I know the tanker helmet is non existent for poser). If yo have any questions E-mail me or Im me here at Renderosity

KNowing this is not military correct ,I think this image shows a lot of workmanship ....Keep up the good work.

From an ARTISTIC point of view, this is a heroic work. The light falls evenly and in consonance with the prevailing sky. It is solid and cinematic. Beautiful work. How could I NOT rate it Excellent?

Being prior military I know my stuff and after reading what the others have said a couple of tips. First I can see you have the talent and this is very well done as mentioned by mahler. The key to perfection is doing the research for a complete render. For this genre I would suggest various military web sites to get the info you need for clothing and gear including nomenclature I.E. where lights and gear etc. should be placed. I have photos of M1A1's,Bradly's etc. from various campaigns I have fought in. Just drop me a note here at Renderosity since I am a member, and I will email you some real photos. Keep up the good effort!