And now, concerning OPFOR rank insignia.
Having all FM 30-100 and FM 7-100 manuals, I found no trace of information concerning OPFOR rank insignia. And I wouldn't say that Internet is overloaded with such information as well.
Nevertheless, I could dig out something, and as usual each new answer bears two new questions

First of all, there are only two OPFOR rank insignia charts in the whole web - on Uniforminsignia and another one I found here - http://www.usmilitariaforum.com/forums/ ... -headgear/.

But, observing both charts I was surprised with the absence of a shoulder slip with three narrow stripes, though there is several evidences of its existence:


And I wonder which rank these insignia were of.
Another question - the shoulder slips color. One source says that red color means motorized rifle units, black - armored, green - field subdued. Another source claims red meant the Soviet army, black - the Soviet Navy, and green - the Russian Federation armed forces. No fusiliers, no airborne? And what really the slips color meant?
Next moment - collar tabs color:

They are claimed as follows:
Tab collar, OPFOR, BLU, TANKC1
Tab collar, OPFOR, RED, RFL CP (RIFLE)
Tab collar, OPFOR, BLK, TANKC1
Tab collar, OPFOR, OD , SBD CP (SUBDUED)
Why "blue" is "tank" and not, for example, airborne?
Questions, questions... So, colleagues, if you have any information or idea concerning all mentioned above issues, or something to be added, it would be great)