ILLUSTRIOUS Back – After a short two month period of maintenance the nation’s on-call Helicopter Assault Ship, previously a simple Helicopter Carrier faces a hectic year ahead.     The ILLUSTRIOUS after a brief shake down in the Channel, including flying training, is making a visit to Liverpool, ahead of a major exercise off Scotland (Joint Warrior) and two months of rigorous Operational Sea Training in the Western Approaches.   At Liverpool the ILLUSTRIOUS will serve as the launchpad for events to commemorate the 70th Anniversary of victory in the Battle of the Atlantic.   The vessel will then be available to deploy.