Donald Trump transgender military ban Albert Cashier
https://www.theguardian.com/us-news/2017/aug/22/donald-trump-transgender-military-ban-albert-cashier
The Guardian/by Adam Gabbatt 08/22/2017
Albert Cashier. Born 1843
Everybody read this article! About a trans Civil War volunteer . . .
If you're interested in others like Cashier also look up Dr James Barry (although be warned he's almost always misgendered despite strong evidence that he was trans)