Complex sentence: With the LSSAH, Kraas took part in the invasion of Poland where he was awarded the Iron Cross second class and became the first officer in the entire division to be awarded the Iron Cross first class for repeated personal bravery during the invasion of Holland.
Split into simpler sentences: With the LSSAH, Kraas took part in the invasion of Poland where he was awarded the Iron Cross second class. He also became the first officer in the entire division to be awarded the Iron Cross first class for repeated personal bravery during the invasion of Holland.