In all, according to the Air Force Historical Studies Office, "1,161 heavy bombers destroyed 22 defensive installations consisting of AA and arty positions and strongpoints covering the Gironde estuary"..
On a darker note, the bombing of Royan would be the Eighth Air Force's only use a new weapon in an attempt to kill Germans in their bunkers: napalm . Known as a Class-C Fire Bomb, each napalm bomb contained 108 Gallons of the petrolium substance, and they were only used in a few missions. A B-17 only carried 4 of them ...
As a result of the conventional and napalm bombing of the city of Royan, the city was totally destroyed, with one report citing that only nine houses remained standing . Among the destructive figures is cited that 1,700 French civilians were killed.
http://www.thepinklady.fr/post/2008/01/ ... -Royan-War
Before I write further I should remind you that this little side bar war was planned to start (14 April, 1945) only about three weeks before the big war in Europe came to an end (7 May, 1945)and would involve, we were told, using almost the entire U.S 8th Air Force’s fleet of heavy bombers (over 1200 of them) for 3 days of continuous bombing to open access to The Port of Bordeaux....One would think that an action so important as to warrant the use of virtually the entire U. S. 8th Air Force would be well documented, but I haven’t found this to be so.