Hello Ruy,
Perhaps this link is a start:
http://users.erols.com/mwhite28/warstat1.htm
The notion of civilian casualties due to Allied bombings applies to my own family: my grandfather was killed in a RAF raid against the German E-boat bunkers at IJmuiden in August 1944.
But of course without the occupation there would have been no bombardment....
Groet,
Leendert