Complex sentence: It was this kind of knowledge that drove them so hard to try and escape, as it would help to bring down the death camp, because with no Jews to do their work, the Nazis would have a lot more trouble running such camps so efficiently.
Split into simpler sentences: It was this kind of knowledge that drove them to try and escape. With no Jews to do the work, the Nazis would have had a lot more trouble running such camps so efficiently.