Complex sentence: Grossrock was awarded the Knight's Cross in August 1944, for his actions during the Battle of Kowel in the Ukraine, when he destroyed 26 T-34 tanks, his tank crew all received the Iron Cross 1st or 2nd class.
Split into simpler sentences: Grossrock was awarded the Knight's Cross in August 1944, for his actions during the Battle of Kowel in the Ukraine, when he destroyed 26 T-34 tanks. His tank crew all received the Iron Cross 1st or 2nd class.