I was expecting to find out that lots of men killed in the war led to many more women working after the war, and that's what could be interpreted/guessed from these pictures.

But looking at wikipedia, it's complicated. A lot of different estimates of deaths. I think a lot more men died in ww2 in the Soviet military, from Wikipedia, about 20 million men (see total war deaths by age group table) and 6 million women. The official counts of the dead were supposed to have underreported deaths by a lot.

Looking at different estimates in wiki, about 10 million military dead and almost 20 million civilian dead.

https://en.wikipedia.org/wiki/World_War_II_casualties_of_the...

I would suggest that the male deaths will have been concentrated in a smaller age range than the female ones.