^True[1], and also planes also had cartoon character and naked women with big tits painted on them. Just google WW2 planes.
That might have to do with the life expectancy of the plane being about 20 minutes back then, but those are just details.
[1] https://archive.ph/X8GXA/9b82a68489e82ee6bbcb58761355a4c546e...
1) Blowing kids to smithereens must be done in a politically correct fashion, even while violating the Geneva convention.
2) Nobody is sure who the enemy will actually be next week, so it would be shame to have to repaint them.
Uhh . . . yeah, no. As someone who served, that's flat-out offensive.
Now think, what do you suppose is the reason someone getting chewed out for scribbling on a shell really is when those are being used in a dubious theatre? (hint: attribution) The absurdity is the real crime.
More likely than not they're living their final few weeks, let them paint a pretty lady on the plane's nose.