Possible Clues:

• 'The Bourne Identity' malady
• Condition of island circumnavigated by drunken seaman
• One stops sloshed seaman showing memory loss
• Forgetfulness of men out in Asia
• It may be retrograde or anterograde
• Sensational plot device
• Condition of men struggling in continent
• Always forgetting where Lebanon is, assuming Norway initially in Middle East
• Memory loss in men sozzled in Asia
• Failure to recall wounded men trapped in continent