172 people were killed and hundreds more injured or made homeless during the attack, which took place from 5pm on January 10,1941, and into the early hours of January 11.
Thousands of bombs were dropped during the largest air raid on the city during the war.
In total during the entire Blitz, 930 people were killed in Portsmouth and 2,837 injured.
More than 6,000 properties were destroyed.
A message from the editor, Mark Waldron.
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