Italy surrendered in 1943 and the Germans occupied the areas which had been under Italian control, including Albania. Once the Germans came in, they immediately started implementing their "Final Solution" and going after those Jewish populations previously spared by the locals.
You don't know much, and what you do know is taken out of the Serb nationalist playbook, wherein everybody else is a liar, with even the historical records of the USAAF having been doctored to hide imagined American perfidy during World War II.
Get a grip.
Have you found anything regarding that "Happy Easter" incident you alluded to?
I doubt it. Just as much as I doubt your ability to own up to mistakenly making that assertion in the event you can't find anything to back it up.
Allied bombing of Belgrade was a taboo subject in communist Yugoslvia. Even during Tito's brush with U.S. during Trieste crisis it was never brought up. Therefore, the documentation about bombing is scarce and only recently it started to resurface.
Methinks Tito had a very sound reason to keep mum about bombing -the documents in U.S. archives.
The records of Easter bombing exists in German archives as well because Germans made great propaganda show out of it - state funeral for victims and rejoiced about the civilian targets destroyed - maternity wards, hospitals, hospices, orphanage etc.
Bombing came as a gift to Germans - at the time of bombing, Chetniks were fighting agaist the Nazis only some 50 miles from Belgrade.