http://www.serbianna.com/columns/savich/049.shtml

The Black Legion: A History of the 1st Ustasha Regiment

by Carl Savich
 
Introduction: Kill a Third, Deport a Third, Convert a Third
The Black Legion
Operation Trio
Srebrenica during World War II
Conclusion

...The systematic genocide committed against the Serbian population of
the NDH by Croats and Bosnian Muslims resulted in a mass uprising and a
resistance movement that led to a civil war. The Black Legion played a
major role in the NDH policy of genocide against the Serbian population
to kill a third, deport a third, and convert a third of the Serbian
population...

http://www.serbianna.com/columns/savich/049.shtml