How frequent was women's enrollment in armies, with or without fake identities, until the end of WW2?

by ad_relougarou
Gankom

I had a poke around and found a few threads from the great /u/Georgy_K_Zhukov that touch on this in various ways. It's not exactly what your asking, but I figure its a good start.

On female Soldiers in the Red Army in WWII.

On Russian Women's Military Units.

and finally for a look at a bunch of different places, What were the roles and responsibilities of Women during WWII (Germany, USSR, etc.)