Complex sentence: There would be no relief for Raus or his men as the Red Army kept up its attacks, at this time the whole front was being pushed back by the Red Army, he nevertheless managed to stabilise a major crossing point across the Donets.
Split into simpler sentences: There would be no relief for Raus or his men as the Red Army kept up its attacks. At this time the whole front was being pushed back by the Red Army, but he nevertheless managed to stabilise a major crossing point across the Donets.