Complex sentence: Operation Epsom was a British attack intended to outflank and seize Caen in France during the Battle of Normandy during World War II. It failed but forced the Germans to abandon their offensive plans and tied most of their armoured units to a defensive role.
Split into simpler sentences: Operation Epsom was a British attack intended to outflank and seize Caen in France during the Battle of Normandy during the Second World War. It did not achieve its overall objective but forced the Germans to abandon their offensive plans and tied most of their armoured units to a defensive role.