On the Russian side of Stalingrad there were Women civilians and soldiers fighting. Although it was rare they did in fact exist, and if they existed they should be in this game. At level 99 your character should change genders from a man to a women. This would be a very rare unlock as most people will quit this game before reaching level 99 so it would in no way break immersion.
Here is proof of Womens existence;
I could not find a picture of a hero women, so here is a rough concept art I made;
Here is proof of Womens existence;
I could not find a picture of a hero women, so here is a rough concept art I made;