World War II: In the second firestorm raid on Germany, the RAF <a href="https://en.wikipedia.org/wiki/Bombing_of_Kassel_in_World_War_II" id="mwuw" rel="mw:WikiLink" title="Bombing of Kassel in World War II">conducts an air raid</a> on the town of Kassel, killing 10,000 and rendering 150,000 homeless.