"Next in line would be Cologne"

In March 1942, 135 RAF aircraft bombed Cologne, killing 62 people.

At the end of May, Cologne was the target for the first 1,000 bomber raid on Germany, when over 1,000 planes dropped nearly 1,500 tonnes of bombs on the city. 12,000 buildings were destroyed and over 500 people killed.

Read more about the Cologne 1,000 bomber raid