Ask the French!
Many were not especially happy about the allied troops as many cities which managed to survive the Germans quite fine but got now bombed into oblivion by the american/british airforce. Interesting chapter of the war.
The Allied bombing of the French city of Caen on D-Day was "close to a war crime", according to leading historian Antony Beevor
'How many Frenchmen did you kill?' British bombing policy towards France (1940-1945)
The Allies embarked on an extensive campaign of bombing in France beginning in 1940, accelerating from March 1942 and becoming particularly intensive from the spring of 1944. This was to cause considerable material damage and loss of human life. Overall almost all 70 000 French civilians were killed by Allied bombs, more than the 43 000 Britons killed by German bombs during the Second World War.
Historians challenge rosy D-Day story, expose Allied atrocities, rape, looting
"It was profoundly traumatic for the people of Normandy," said Christophe Prime, a historian at the Peace Memorial in Caen.
"Think of the hundreds of tons of bombs destroying entire cities and wiping out families. But the suffering of civilians was for many years masked by the over-riding image - that of the French welcoming the liberators with open arms."
According to Prime, it was during the 60th anniversary commemoration five years ago that the taboo first began to lift.
At town meetings across Normandy, witnesses - now on their 70s - spoke of the terrible things they had seen as children...
....and that was only the Normandy. Till May 45 the allied bombed alot of cities, european cities not only german ones.