This is a collection of several items from MGSV to give your soldiers a more generic realistic look. 
Note: there are some issues with the headwear with some of the hairs clipping through, use common sense to avoid them. 

Credits to Cra0kalo for the mgsv gz file extractors 
The great people at the now defunct Kojima productions 
The people on the facepunch xcom thread for volunteering to test and providing pics 
and last but certainly not least, Capnbubs for his great as guide to adding headwear! 
http://steamcommunity.com/sharedfiles/filedetails/?id=623181918

Steam link: http://steamcommunity.com/sharedfiles/filedetails/?id=632252203