Sam, it may or may not be pointless to respond to your comments.
I do think it’s worthwhile, though, to clarify something here: It was the AUSTRIANS who wanted the Serbians to settle the lands known as the “Military Frontier” (Krajina) in what was then part of Austria-Hungary and is now in Croatia. The AUSTRIANS “invited” the Serbians to settle those lands to create a good barrier between the Ottoman Empire and the Austro-Hungarian empire. It was not the Serbians who went to war against the Austrians in WWI, it was the Austrians who went to war against the Serbians.
As far as Serbian history in the Independent State of Croatia, particularly in that “Military Frontier” (Krajina) area, as the NDH (Croatia) was established when the Croats enthusiastically welcomed the Nazis as liberators on April 10, 1941, it would be enlightening to read both German and Italian testimonies regarding Croatian treatment of Serb civilians during WWII.
Much of that same treatment of the Serbs was repeated in the 1990s as Croatia resurrected its Nazi past, a past it remains proud of to this day.
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