Complex sentence: Soon after, SA-Obersturmbannführer Oskar Heines and SA-Obersturmbannführer Werner Engels reported to the Polizeiprasidium in Breslau where they were immediately placed under arrest by SS men.
Split into simpler sentences: Soon after, SA-Obersturmbannführer Oskar Heines, along with SA-Obersturmbannführer Werner Engels, reported to the Polizeiprasidium in Breslau. They were immediately placed under arrest by SS men.