This has been my subject of research for many years. My latest book covers the two world wars in Europe and the US and has many hitherto unpublished documents written by women on different fronts, including the Warsaw Ghetto. it’s the work of a lifetime, I’ve been collecting data for many many years as this has intersected areas I have worked on.
Despite this being in French, you can perhaps  find out more

Femmes dans la guerre (1914-1945) : Survivre au féminin devant et durant deux conflits mondiaux

The next one will be about Women at War in Afghanistan