Complex sentence: Captain Hagen is a member of the U.S. Army Rangers and Captain Freund, a member of GSG9 are taken to the Close Quarter Battle house and witness a SAS room entry assault at first hand.
Split into simpler sentences: Captain Hagen is a member of the U.S. Army Rangers and Captain Freund is a member of GSG9. They are taken to the Close Quarter Battle house and witness an SAS room entry assault at first hand.