Complex sentence: All sides in the Second World War are forced to unify to fight this threat, and despite superior technology the Lizards (a human racial epithet for the aliens) are fought to a draw by 1944.
Split into simpler sentences: All sides in the Second World War are forced to unify to fight this threat. And despite superior technology the Lizards (a human racial epithet for the aliens) are fought to a draw by 1944.