Really depends on your personal comfort level and your children's comfort level. Ex, if they ask you not to be naked around them or act uncomfortable then you should probably stop. There really is no definitive answer.
My son is now 2 he still sees me and my husband naked, during shower or dressing or whatever. My cousins and I grew up our entire life without that specific boundary between our parents, even our grandparents (usually the women). They never over did of course.
My mom would often be in a big t shirt and panties, she would walk from the bathroom to the bedroom naked she slept in her underwear, cooked in her underwear, etc... and it was always completely normal. No one ever blinked an eye, never stopped the flow of conversation etc. There can be positive consequences to not making a big deal about nudity or certain states of undress. Ex, I notice my male cousins are a lot less picky about women's bodies than other men.
Their mother was a bit overweight with stretch marks, cellulite, etc.. and they saw all of that their whole lives. Instead of a magazine with perfect women serving as their beauty reference, it was their mother (and grandma). Same thing goes for me, I never had a lot of issues with body image because I grew up exposed to real women's bodies my whole life.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.