Besides the well-known area of nursing, describes the many roles filled by women during the great war: doctors (more than I realized), phone operators, drivers, members of aid organization like the Salvation Army, the newly formed women's military units like the WAACs and WRNS, journalists, pilots, spies, and even formal combat (specifically in post-Revolution Russia). A little dry, but very interesting, and covered some new ground for me.
For example,it did not surprise me that women had to struggle for the right to serve, or that in the UK they were paid less than the men; what I did not know was that the US equivalents, in many cases, were given equal rank, pay, and veteran status with male soldiers. A surprise in pre-suffrage days!