Original: According to reports by General Glaise-Horstenau, Hitler was angry with PaveliÄ, whose policy inflamed the rebellion in Croatia, thwarting any prospect of deploying NDH forces on the Eastern Front.
Simplified: According to the Glaise von Horstenau reports, Hitler was angry with PaveliÄ whose policy inflamed the rebellion in Croatia - by which Hitler lost ability to engage the Independent State of Croatia forces on the Eastern Front.