Possible Clues:

• Recognise place of the dead — big research establishment
• Make out head of department is needing researchers
• Pick out various bits from cinders
• Recognise one has to take risks, having succeeded in joining navy
• Tell apart
• You can see that it's all round the flat to start with
• Make out record with English navy
• Make out English service on record
• Start to get around to make it out
• Notice diners shivering with cold within