American and Soviet troops sharing a meal after victory in Europe, WW2, 1945
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https://media.piefed.social/posts/P2/XP/P2XPuZJebhfNQyo.webp
https://media.piefed.social/posts/P2/XP/P2XPuZJebhfNQyo.webp
A long time ago an article about this mentioned both sides hated these events (well perhaps not all of them, but they were in general stuffy gatherings).