Complex sentence: Miklas capitulated at midnight, announcing that he had instated Seyss-Inquart as the new Chancellor-and when German troops rolled over the border at dawn the next day, they were largely greeted as heroes.
Split into simpler sentences: Miklas capitulated at midnight, announcing that he had instated Seyss-Inquart as the new Chancellor. When German troops rolled over the border at dawn the next day, they were largely greeted as heroes.