"Why would an Albanian be leading a Croatian offensive?"
What exactly are you trying to say with that question? If you are doubting that Agim Ceku had any involvement with the Croatians than do a little search on Google (Agim Ceku + Croatia) and you'll get 19 400 results listed. But in case you can't be bothered doing a little searching of your own, this is what Wikipedia have to say:
"He was closely involved in the subsequent war against Serbia and the breakaway Republic of Serbian Krajina, suffering wounds during fighting at the Medak Pocket in September 1993. He helped to update the doctrine and tactics of the Croatian Army over the next two years, planning the successful Operation Storm in 1995 that ended the war in Croatia. He was decorated nine times by Croatia for his service and rose to the rank of brigadier-general."
http://en.wikipedia.org/wiki/Agim_Ceku
As to the rest of your commentary, why are you bringing Croatia - Bosnia into this? The article is about Agim Ceku (a Kosovo Albanian) and his role in Croatia. And yes, he did have a commanding role within the Croatian forces.
It was just a simple question.
When the media reported the Bosnian war and dissolution of Yugoslavia I just got the impression that the makeshift Bosnian-Croatian alliance was akin to the Chinese resistance to the Imperial Japanese Army, i.e. they spent most of their time sniping at each other, rather than fighting their purported enemy.