I once had the youngest Chief MSGT in the AF working for me (Age 30--sort of like making 4-StaR by the same age) who once proffered the classic insight: "When is the Air Force ever going to learn that you can't 'occupy' a piece of ground with a bomb." Truer words..
I recall any number of books, many fiction alas, but they would write about the invasion commander talking to his assault planners after they came in with the rough draft of the plan to utterly crush resistance even before the landing force got ashore. The commander would tell the to go back and double the amount of ordnance planned for the pre-assault bombardment. They'd whine but off they went to do as ordered. When they came back to brief the new plan the commander would thank them and tell the. To double all ordnance again.Nobody understands the limits of CEP and blast deflection until they have seen it themselves. The post war bombing surveys were unbelievably sad reading. All that suffering and loss for negligible results until they finally understood that the only true weakness was the oil supply.