Complex sentence: However, the loss of Slovenia made a nonsense of the original objective of keeping Yugoslavia intact; many of the Serb members of the army were in any case no longer willing to fight for a multiethnic Yugoslavia.
Split into simpler sentences: However, the loss of Slovenia made a nonsense of the original objective of keeping Yugoslavia intact. Many of the Serb members of the army were in any case no longer willing to fight for a multiethnic Yugoslavia.