Complex sentence: Contradictory sources make casualty figures difficult to establish, the 22nd Armoured Brigade group suffered around 217 men killed, wounded and missing, many of whom were taken prisoner at Point 213.
Split into simpler sentences: Contradictory sources make casualty figures difficult to establish. The 22nd Armoured Brigade group suffered around 217 men killed, wounded and missing, many of whom were taken prisoner at Point 213.