historical_connection
When the image contains any sort of historical event reference, either a specific era, battles, or wars. This can also be applied to posts featuring character(s) based on a historical entity that were connected in real life in one way or another.
For posts that directly depicts a historical event, see historical event.
See also
* Historical event* Historical name connection - posts with two or more characters based on the same historical entity
* Tag group:history
Aliases: none