Reverse image search says it's a Republican fighter from the Spanish Civil War. I didn't find much beyond that.

This image has probably been extensively cleaned up with Photoshop. The version in Wikimedia Commons is much messier.

https://commons.wikimedia.org/...

Context from a thread I found through reverse image search:

It is one of multiple photos taken by a Norwegian athlete in Barcelona in the day a civil war broke out. The athlete was there for a competition being organized in protest to the Olympics being held in the then already Nazi Germany.

Thread if you're interested, in Catalan on Twitter:
https://x.com/BoigBCN/status/1776987784504348959

Or through a Nitter instance if you don't want to use Twitter directly: https://nuku.trabun.org/...

#History #BattleOfBarcelona #KarlEvang