The post you are reporting:
Brian, in the First World War, not one city was destroyed.
In the Second, however, planes bombed cities, and some were practically bombed to ruins.
The Soviet forces lost between 100,000 and 300,000 men in the fight for Berlin, and that was without use of aircraft. The losses were so tremendous, that the Kremlin probably didn't release the latter figure figure until much later.
As one can imagine, there was plenty of house to house combat.
However, the air raids on Berlin by the Western allies had already largely destroyed the city. Dresden is one other example, but there are many, many more, Brian!
Coventry also got badly bombed during the Battle of Britain, although it was a one-off occasion. The German cities got bombed time and again.
Dresden was destroyed three times over in one night, not long before the end of the war in 1945. It had no military significance and was full of refugees from Prussia, which has already been conquered by the Red Army.
The Russians did not bombard cities, it was the Westerrn air-forces that did.
Warsaw was also badly damaged, by German army activity against the Jews in 1943 and the Polish Home Army in 1944.
Dover was badly damaged. In fact Dover is a veteran town of aerial and artillery shell bombardments.
One day last year, my sister invited me out to look for the houses of various great grandparents of ours in Dover. To her dismay, we discovered that many didn't exist.
One young Scotsman said to us, seeing my sister looking for one particular house: "it got destroyed in the war".