Complex sentence: In late 1940s, some 8,000 soldiers of the SS Galizien division were allowed to come to Britain including, allegedly, members of the unit that massacred inhabitants of Huta Pieniacka.
Split into simpler sentences: In late 1940s, some 8,000 soldiers of the SS Galizien division were allowed to come to Britain. It is alleged that among them were members of the unit that massacred inhabitants of Huta Pieniacka.