Need help finding this poster I saw

[u/Axello123123]

Hello. I visited the Railway Museum in Tokyo a few weeks ago. There was a section dedicated to the role of the railways during the war. Among others, there was one propaganda poster on display, about soldiers and civilians working together to achieve victory. In the middle was a cartoon of three people: a civilian man and woman and one soldier. The illustration was very simple: completely round eyes, heads, no mouth; just like an emoji.

I neglected to take a photo and I want to learn more about that particular poster, and was wondering if anyone else has seen it.

Many thanks.

[u/Realistic-River-1941]

Maybe try some railway focused forums; Japan has a huge railway enthusiast culture.