However, Serbs were our allies during WWI so that example is not accurate. Times may change, but Islamofascists don’t.
The driving force in the Balkans is still nationalism, not religion. Serbs have fought Catholic Croats was well as Muslim Bosnians and Kosovars. The claim that Serbia is fighting Islamic terrorism is window dressing. Serbia wants every canton with a majority of Serbians to be part of Serbia. Fine. That implies allowing the rest of Kosovo to got its own way, and allowing Croat cantons to join Croatia, and so forth. They haven’t allowed that.
Albanians aren’t “Islamofascists”.