@aLmAnZo
That's 12 countries out of the 196 countries that exist.
Israel, Serbia, Sweden, Switzerland, and Finland are not members of NATO either.

Currently this should not be a high priority issue. This should be a low priority or a mod. Currently in the factions provided female soldiers in the US are in secondary lines, and again this whole new females in frontlines could easily be overturned within 20 years. If you really want female soldiers ask a modder and they'd hopefully be glad to do it. Iranian forces would not allow female soldiers due to their religious ideology. If anything female pilots, medics, and MPs should be added as those are some of the most common MOS for females in the US military today.
Again it's the future and this new legislation could be overturned.

@Emualynk
I have read the thread and most NATO countries except for a few have women in support roles. Again I have mentioned the ban but it's 20 years in the future and it could have been banned again due to problems with women being raped, not being able to keep up and carry the same equipment with other men in their squad, using their bodies to gain promotions (that is a current problem actually), and having sex with male soldiers (another current problem). I know I'm going to be called sexist by the feminazis but it is the truth and sadly not a lot of women in the US military are actually there to serve their country. It is the US of A last time I checked in ArmA III
"The serving contingent is a composition of elements of the reactivated US 7th Infantry Division (7th US Army Europe), primarily tasked with the security and maintenance of Air Station Mike-26 – a critical part of NATO’s radar shield – and providing air support in the Aegean Sea region "